Dear Friends, SBI Clerk 2018 Notification has been released we hope you all have started your preparation. Here we have started New Series of Practice Materials specially for SBI Clerk 2018. Aspirants those who are preparing for the exams can use this “20-20” Quantitative Aptitude Questions.
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Review
Question 1 of 20
1. Question
Direction (Q. 1-5): What will come in the place of question mark (?) in the following number series?
4, 17, 62, ? , 1894, 13267
Correct
Answer: a
4, 17, 62, ?, 1894, 13267
4 × 3 + 5 = 17
17 × 4 – 6 = 62
62 × 5 + 7 =317
317 × 6 – 8 = 1894
1894 × 7 + 9 = 13267
Hence, 317 will come in the place of question mark.
Incorrect
Answer: a
4, 17, 62, ?, 1894, 13267
4 × 3 + 5 = 17
17 × 4 – 6 = 62
62 × 5 + 7 =317
317 × 6 – 8 = 1894
1894 × 7 + 9 = 13267
Hence, 317 will come in the place of question mark.
Question 2 of 20
2. Question
Direction (Q. 1-5): What will come in the place of question mark (?) in the following number series?
6, 8, ? , 22, 36, 58
Correct
Answer: c
6, 8, ?, 22, 36, 58
6 + 8 = 14
8 + 14 = 22
14 + 22 = 36
22 + 36 = 58
Hence, 14 will come in the place of question mark.
Incorrect
Answer: c
6, 8, ?, 22, 36, 58
6 + 8 = 14
8 + 14 = 22
14 + 22 = 36
22 + 36 = 58
Hence, 14 will come in the place of question mark.
Question 3 of 20
3. Question
Direction (Q. 1-5): What will come in the place of question mark (?) in the following number series?
0.25, 1, 2.25, ? , 6.25, 9, 12.25
Correct
Answer: e
0.25, 1, 2.25 , ?, 6.25, 9, 12.25
0.5^2= 0.25
1^2 = 1
1.5^2 = 2.25
2^2 = 4
2.5^2 =6.25
3^2 = 9
3.5^2 = 12.25
Hence, 4 will come in the place of question mark.
(Or)
The difference of difference is 0.5
Incorrect
Answer: e
0.25, 1, 2.25 , ?, 6.25, 9, 12.25
0.5^2= 0.25
1^2 = 1
1.5^2 = 2.25
2^2 = 4
2.5^2 =6.25
3^2 = 9
3.5^2 = 12.25
Hence, 4 will come in the place of question mark.
(Or)
The difference of difference is 0.5
Question 4 of 20
4. Question
Direction (Q. 1-5): What will come in the place of question mark (?) in the following number series?
56, 67, 100, ?, 232, 331
Correct
Answer: b
56, 67, 100 , ?, 232, 331
56 + 11 = 67
67 + 33 = 100
100 + 55 = 155
155 + 77 = 232
232 + 99 = 331
Hence, 155 will come in the place of question mark.
Incorrect
Answer: b
56, 67, 100 , ?, 232, 331
56 + 11 = 67
67 + 33 = 100
100 + 55 = 155
155 + 77 = 232
232 + 99 = 331
Hence, 155 will come in the place of question mark.
Question 5 of 20
5. Question
Direction (Q. 1-5): What will come in the place of question mark (?) in the following number series?
63, 352, 608, ?, 1029, 1198
Correct
Answer is: b
63, 352, 608 , ?, 1029, 1198
63 + 289 = 352
352 + 256 = 608
608 + 225 = 833
833 + 196 = 1029
1029 + 169 = 1198
Hence, 833 will come in the place of question mark.
Incorrect
Answer is: b
63, 352, 608 , ?, 1029, 1198
63 + 289 = 352
352 + 256 = 608
608 + 225 = 833
833 + 196 = 1029
1029 + 169 = 1198
Hence, 833 will come in the place of question mark.
Question 6 of 20
6. Question
Directions(Q. 6 – 10) : What approximate value will come in place of question mark(?) in the given questions ? (Note : you are not expected to calculate the exact value.)
6399 × 1 (5/8) + 353 ÷ ? = 10444
Correct
Answer is: e
6399 × (13 / 8) + 353 ÷ ? = 10444
Or, 6400 ×(13 / 8) + (353 / ?) ≈ 10444
Or, 800 × 13 + (353 / ?) ≈ 10444
Or, (353 / ?) = 10444 – 10400 ≈ 44
Or, ? = 353 / 44 = 8.022 ≈ 8
Incorrect
Answer is: e
6399 × (13 / 8) + 353 ÷ ? = 10444
Or, 6400 ×(13 / 8) + (353 / ?) ≈ 10444
Or, 800 × 13 + (353 / ?) ≈ 10444
Or, (353 / ?) = 10444 – 10400 ≈ 44
Or, ? = 353 / 44 = 8.022 ≈ 8
Question 7 of 20
7. Question
Directions(Q. 6 – 10) : What approximate value will come in place of question mark(?) in the given questions ? (Note : you are not expected to calculate the exact value.)
√(624) × 14.02 + √(404) × 15.97 = ?
Correct
Answer is: a
? = √625 ×14 + √400 × 16
≈ 25 × 14 + 20 × 16 = 350 + 320 = 670
Incorrect
Answer is: a
? = √625 ×14 + √400 × 16
≈ 25 × 14 + 20 × 16 = 350 + 320 = 670
Question 8 of 20
8. Question
Directions(Q. 6 – 10) : What approximate value will come in place of question mark(?) in the given questions ? (Note : you are not expected to calculate the exact value.)
8461 ÷ 11.99 – 24.01 ÷ (5 / 100) = ?
Correct
Answer is: e
? = 8460 ÷ 12 – 24 × (100 / 5)
= 705 – 24 × 20 = 705 – 480 = 225
Incorrect
Answer is: e
? = 8460 ÷ 12 – 24 × (100 / 5)
= 705 – 24 × 20 = 705 – 480 = 225
Question 9 of 20
9. Question
Directions(Q. 6 – 10) : What approximate value will come in place of question mark(?) in the given questions ? (Note : you are not expected to calculate the exact value.)
(14.85% of 679) + (19.9% of 219.83) = ?
Correct
Answer is: b
? = [(15 × 680) / 100] + [(20 × 220) / 100]
= 102 + 44 ≈ 146 ≈ 145
Incorrect
Answer is: b
? = [(15 × 680) / 100] + [(20 × 220) / 100]
= 102 + 44 ≈ 146 ≈ 145
Question 10 of 20
10. Question
Directions(Q. 6 – 10) : What approximate value will come in place of question mark(?) in the given questions ? (Note : you are not expected to calculate the exact value.)
1441÷? + 149.98 × 14.99 = 3006 – 254.91
Correct
Answer is: a
1441 ÷ ? + 149.98 × 14.99
= 3006 – 254.91
Or, 1441 / ? = 2751 – 150 × 15
= 2750 – 2250 = 500
?= 1440 / 500 = 2.88 = 3
Incorrect
Answer is: a
1441 ÷ ? + 149.98 × 14.99
= 3006 – 254.91
Or, 1441 / ? = 2751 – 150 × 15
= 2750 – 2250 = 500
?= 1440 / 500 = 2.88 = 3
Question 11 of 20
11. Question
A certain sum of money amounted to Rs 7200 at 5% in a time in which Rs 4800 amounted to Rs 6336 at rate of 8%. What is the sum in this case considering simple interest rate?
Correct
Answer: b
Let’s assume that the required time = T years
Hence in 2nd case, (6336 – 4800) = (4800’8’T)/100
=> T = (1536’100)/(4800’8)
=> T = 4 years
Let’s suppose that the principal amount be Rs P in 1St case.
Hence, P + (P'((5’4)/100)) = 7200
=> 1.2P = 7200
=> P = Rs 6000
Incorrect
Answer: b
Let’s assume that the required time = T years
Hence in 2nd case, (6336 – 4800) = (4800’8’T)/100
=> T = (1536’100)/(4800’8)
=> T = 4 years
Let’s suppose that the principal amount be Rs P in 1St case.
Hence, P + (P'((5’4)/100)) = 7200
=> 1.2P = 7200
=> P = Rs 6000
Question 12 of 20
12. Question
In a 100m race, Kranthi beats Shakthi by 10m and Shakthi beats Bhakthi by 5s. What is the speed of Kranthi (in m/s) if it is known that Kranthi runs twice as fast as Bhakthi?
Correct
Answer: c
Let speeds of Kranthi, Shakthi and Bhakthi be denoted by k, s and b respectively.
It is given that Kranthi beats Shakthi by 10m, this means that while Kranthi has travelled 100m, Shakthi has travelled only (100-10) = 90m or 90%.
=> s X t’=0.9 X k X t’
=> s=0.9 X k …(1)
It is also given that Shakthi beats Bhakthi by 5 secs, this means that:
=> s X t=b X (t+5)=100 …(2)
Also, it is given that: k=2b ..(3)
Using (3) in (1), we get
=> s=0.9 X 2b=1.8b ..(4)
Using (4) in (2), we get
=> 1.8bt=bt+5b =>0.8bt=5b
=> t = 5b/0.8b = 6.25s.
Using this result in (2), we get s = 100/t = 100/6.25 = 16 m/s
Using this result in (1), we get k = sl(0.9) = 16/(0.9) = 17.78 m/s
Incorrect
Answer: c
Let speeds of Kranthi, Shakthi and Bhakthi be denoted by k, s and b respectively.
It is given that Kranthi beats Shakthi by 10m, this means that while Kranthi has travelled 100m, Shakthi has travelled only (100-10) = 90m or 90%.
=> s X t’=0.9 X k X t’
=> s=0.9 X k …(1)
It is also given that Shakthi beats Bhakthi by 5 secs, this means that:
=> s X t=b X (t+5)=100 …(2)
Also, it is given that: k=2b ..(3)
Using (3) in (1), we get
=> s=0.9 X 2b=1.8b ..(4)
Using (4) in (2), we get
=> 1.8bt=bt+5b =>0.8bt=5b
=> t = 5b/0.8b = 6.25s.
Using this result in (2), we get s = 100/t = 100/6.25 = 16 m/s
Using this result in (1), we get k = sl(0.9) = 16/(0.9) = 17.78 m/s
Question 13 of 20
13. Question
A and B throw a dice one after the other. If A starts the game, what is the probability that B gets a value more than what A gets?
In z years ago Shashi was one seventh as old as Tinu. In z years from now Tinu will be thrice as old as Shashi. What is the ratio of Tinu’s current age to Shashi’s current age?
Correct
Answer: a
Let Shashi and Tinu’s current ages be ‘x’ and ‘y’ years respectively.
Ages z years ago: ‘x – z’ and ‘y – z’
x – z = (1/7) (y – z)
=>7x-7z=y – z
=> 7x – y = 6z —-(i)
Ages in z years from now: ‘x + z’ and ‘y + z’
3(x + z) = y + z
=> 3x + 3z = y + z
=> y – 3x = 2z
=> 3y – 9x = 6z …(ii)
Equating (ii) and (i):
=> 7x – y = 3y – 9x
=> 16x = 4y
=> y/x = 4/1
Incorrect
Answer: a
Let Shashi and Tinu’s current ages be ‘x’ and ‘y’ years respectively.
Ages z years ago: ‘x – z’ and ‘y – z’
x – z = (1/7) (y – z)
=>7x-7z=y – z
=> 7x – y = 6z —-(i)
Ages in z years from now: ‘x + z’ and ‘y + z’
3(x + z) = y + z
=> 3x + 3z = y + z
=> y – 3x = 2z
=> 3y – 9x = 6z …(ii)
Equating (ii) and (i):
=> 7x – y = 3y – 9x
=> 16x = 4y
=> y/x = 4/1
Question 15 of 20
15. Question
A man purchases 2 horses and 3 cows for Rs 72000. He sells the horses at 15% profit and cows at 5% loss. If in this way he gets a total profit of Rs 8000 then what is the total cost of one horse and one cow?
Correct
Answer: b
Let the cost price of one horse and one cow be Rs H and Rs C respectively.
According to the question; 2H + 3C = 72000… (1)
According to the question; 2(1.15H) + 3(0.95C) = 80000
=> 2.3H + 2.85C = 80000… (2)
(2) – (1) gives 0.311- 0.15C = 8000
=> H – 0.5C = 80000/3 … (3)
Solving (1) and (3), we get H = 29000 and C = 4667
H + C = 33667
Incorrect
Answer: b
Let the cost price of one horse and one cow be Rs H and Rs C respectively.
According to the question; 2H + 3C = 72000… (1)
According to the question; 2(1.15H) + 3(0.95C) = 80000
=> 2.3H + 2.85C = 80000… (2)
(2) – (1) gives 0.311- 0.15C = 8000
=> H – 0.5C = 80000/3 … (3)
Solving (1) and (3), we get H = 29000 and C = 4667
H + C = 33667
Question 16 of 20
16. Question
Direction (Q. 16-20): Study the following graphs carefully and answer the questions that follow:
What is the average number of Wheat’s produced by Punjab, Karnataka, Rajasthan and Tamil Nadu together?
Correct
Answer: b
(36.2 + 58.8 + 52.6 + 54.4)*1000/4
= 202000/4
= 50500
Incorrect
Answer: b
(36.2 + 58.8 + 52.6 + 54.4)*1000/4
= 202000/4
= 50500
Question 17 of 20
17. Question
Direction (Q. 16-20): Study the following graphs carefully and answer the questions that follow:
Rice used for Domestic purpose of Maharashtra and Punjab is approximately what percent of the Rice used for domestic purpose of Karnataka and Tamil Nadu?
Direction (Q. 1-5): What will come in the place of question mark (?) in the following number series?
4, 17, 62, ? , 1894, 13267
317
282
128
326
None of these
6, 8, ? , 22, 36, 58
16
12
14
None of these
13
0.25, 1, 2.25, ? , 6.25, 9, 12.25
5.50
3.50
3.75
4.25
None of these
56, 67, 100, ?, 232, 331
135
155
145
127
137
63, 352, 608, ?, 1029, 1198
783
833
939
834
763
Directions(Q. 6 – 10) : What approximate value will come in place of question mark(?) in the given questions ? (Note : you are not expected to calculate the exact value.)
6399 × 1 (5/8) + 353 ÷ ? = 10444
14
22
2
16
8
7).√(624) × 14.02 + √(404) × 15.97 = ?
670
570
710
510
610
8).8461 ÷ 11.99 – 24.01 ÷ (5 / 100) = ?
625
400
250
900
225
9). (14.85% of 679) + (19.9% of 219.83) = ?
115
145
65
105
85
10). 1441÷? + 149.98 × 14.99 = 3006 – 254.91
3
15
25
45
5
A certain sum of money amounted to Rs 7200 at 5% in a time in which Rs 4800 amounted to Rs 6336 at rate of 8%. What is the sum in this case considering simple interest rate?
Rs 6500
Rs 6000
Rs 5600
Rs 6200
None of These
In a 100m race, Kranthi beats Shakthi by 10m and Shakthi beats Bhakthi by 5s. What is the speed of Kranthi (in m/s) if it is known that Kranthi runs twice as fast as Bhakthi?
18.0
18.2
17.7
16.2
16.6
A and B throw a dice one after the other. If A starts the game, what is the probability that B gets a value more than what A gets?
1/2
6/11
5/12
4/9
None of these
In z years ago Shashi was one seventh as old as Tinu. In z years from now Tinu will be thrice as old as Shashi. What is the ratio of Tinu’s current age to Shashi’s current age?
4:1
1:4
17:9
8:5
Cannot be determined
A man purchases 2 horses and 3 cows for Rs 72000. He sells the horses at 15% profit and cows at 5% loss. If in this way he gets a total profit of Rs 8000 then what is the total cost of one horse and one cow?
Rs 36667
Rs 33667
Rs 38774
Rs 39774
Rs 40664
Direction (Q. 16-20): Study the following graphs carefully and answer the questions that follow:
What is the average number of Wheat’s produced by Punjab, Karnataka, Rajasthan and Tamil Nadu together?
52500
50500
50100
48600
59800
Rice used for Domestic purpose of Maharashtra and Punjab is approximately what percent of the Rice used for domestic purpose of Karnataka and Tamil Nadu?
75 %
63 %
72 %
78 %
80 %
What is the average number of Wheat’s exported by Maharashtra, Karnataka and Tamil Nadu?
13568
11298
12468
12048
14158
What is the respective ratio between Rice exported by Punjab and Karnataka and Wheat’s exported by same states?
26560 : 28786
20450 : 22357
22810 : 24693
29650 : 31462
24550 : 26692
Wheat’s exported by Rajasthan and Tamil Nadu is what per cent more/less than the Wheat’s exported by Maharashtra and Punjab?
20 %
10 %
30%
25%
35 %
Answers:
Direction (Q. 1-5):
Answer: a
4, 17, 62, ?, 1894, 13267
4 × 3 + 5 = 17
17 × 4 – 6 = 62
62 × 5 + 7 =317
317 × 6 – 8 = 1894
1894 × 7 + 9 = 13267
Hence, 317 will come in the place of question mark.
Answer: c
6, 8, ?, 22, 36, 58
6 + 8 = 14
8 + 14 = 22
14 + 22 = 36
22 + 36 = 58
Hence, 14 will come in the place of question mark.
Answer: e
0.25, 1, 2.25 , ?, 6.25, 9, 12.25
0.5^2= 0.25
1^2 = 1
1.5^2 = 2.25
2^2 = 4
2.5^2 =6.25
3^2 = 9
3.5^2 = 12.25
Hence, 4 will come in the place of question mark.
(Or)
The difference of difference is 0.5
Answer: b
56, 67, 100 , ?, 232, 331
56 + 11 = 67
67 + 33 = 100
100 + 55 = 155
155 + 77 = 232
232 + 99 = 331
Hence, 155 will come in the place of question mark.
Answer is: b
63, 352, 608 , ?, 1029, 1198
63 + 289 = 352
352 + 256 = 608
608 + 225 = 833
833 + 196 = 1029
1029 + 169 = 1198
Hence, 833 will come in the place of question mark.
Directions(Q. 6 – 10) :
Answer is: e
6399 × (13 / 8) + 353 ÷ ? = 10444
Or, 6400 ×(13 / 8) + (353 / ?) ≈ 10444
Or, 800 × 13 + (353 / ?) ≈ 10444
Or, (353 / ?) = 10444 – 10400 ≈ 44
Or, ? = 353 / 44 = 8.022 ≈ 8
Answer is: a
? = √625 ×14 + √400 × 16
≈ 25 × 14 + 20 × 16 = 350 + 320 = 670
8.Answer is: e
? = 8460 ÷ 12 – 24 × (100 / 5)
= 705 – 24 × 20 = 705 – 480 = 225
Answer is: b
? = [(15 × 680) / 100] + [(20 × 220) / 100]
= 102 + 44 ≈ 146 ≈ 145
10).Answer is: a
1441 ÷ ? + 149.98 × 14.99
= 3006 – 254.91
Or, 1441 / ? = 2751 – 150 × 15
= 2750 – 2250 = 500
?= 1440 / 500 = 2.88 = 3
Answer: b
Let’s assume that the required time = T years
Hence in 2nd case, (6336 – 4800) = (4800’8’T)/100
=> T = (1536’100)/(4800’8)
=> T = 4 years
Let’s suppose that the principal amount be Rs P in 1St case.
Hence, P + (P'((5’4)/100)) = 7200
=> 1.2P = 7200
=> P = Rs 6000
Answer: c
Let speeds of Kranthi, Shakthi and Bhakthi be denoted by k, s and b respectively.
It is given that Kranthi beats Shakthi by 10m, this means that while Kranthi has travelled 100m, Shakthi has travelled only (100-10) = 90m or 90%.
=> s X t’=0.9 X k X t’
=> s=0.9 X k …(1)
It is also given that Shakthi beats Bhakthi by 5 secs, this means that:
=> s X t=b X (t+5)=100 …(2)
Also, it is given that: k=2b ..(3)
Using (3) in (1), we get
=> s=0.9 X 2b=1.8b ..(4)
Using (4) in (2), we get
=> 1.8bt=bt+5b =>0.8bt=5b
=> t = 5b/0.8b = 6.25s.
Using this result in (2), we get s = 100/t = 100/6.25 = 16 m/s
Using this result in (1), we get k = sl(0.9) = 16/(0.9) = 17.78 m/s
