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A bag contains 3 red marbles, 6 yellow marbles and 4 green marbles. If three marbles are taken at random, than what is the probability that 2 marbles are green?
Correct
Answer c
Total probability = 13C_{3}
Required probability = 4C_{2} and 9C_{1}
The probability that 2 marbles are pink,
= > [4C_{2} and 9C_{1}] / 13C_{3}
= > 27/143
Incorrect
Answer c
Total probability = 13C_{3}
Required probability = 4C_{2} and 9C_{1}
The probability that 2 marbles are pink,
= > [4C_{2} and 9C_{1}] / 13C_{3}
= > 27/143
Question 12 of 20
12. Question
Two- fifth of a number is equal to three-seventh of another number. The difference of these two numbers is 18. Find the numbers?
Correct
Answer a
(2/5) of a number = (3/7) of another number
(2/5)*x = (3/7)*y
(x/y) = (3/7)*(5/2) = 15/14
X : y = 15 : 14
1’s = 18
The numbers are = 15*18 and 14*18 = 270 and 252
Incorrect
Answer a
(2/5) of a number = (3/7) of another number
(2/5)*x = (3/7)*y
(x/y) = (3/7)*(5/2) = 15/14
X : y = 15 : 14
1’s = 18
The numbers are = 15*18 and 14*18 = 270 and 252
Question 13 of 20
13. Question
Applied to a bill for Rs. 90,000, the difference between a discount of 30 % and two successive discounts of 24 % and 5 % is?
Correct
Answer b
90000*(70/100) = 63000
90000*(76/100)*(95/100) = 64980
Required difference
= > 64980 – 63000
= > Rs. 1980
Incorrect
Answer b
90000*(70/100) = 63000
90000*(76/100)*(95/100) = 64980
Required difference
= > 64980 – 63000
= > Rs. 1980
Question 14 of 20
14. Question
P and Q started a business by investing Rs. 18000 and Rs. 24000 respectively. After 5 months, P invested Rs. 2000 more. And after 4 months, Q withdraws the whole amount. Find the share of Q, if the total profit at the end of the year is Rs. 73590?
Correct
Answer c
The share of P and Q,
= > [18000*5 + 20000*7]: [24000*9]
= > 230000: 216000
= > 115: 108
223’s = 73590
1’s = 330
The share of Q = 108’s = Rs. 35640
Incorrect
Answer c
The share of P and Q,
= > [18000*5 + 20000*7]: [24000*9]
= > 230000: 216000
= > 115: 108
223’s = 73590
1’s = 330
The share of Q = 108’s = Rs. 35640
Question 15 of 20
15. Question
A shopkeeper marks his goods at 25 % above its cost price and allows a discount of 12%. How much profit/Loss percent does he make?
Correct
Answer a
Let us assume the cost price be Rs. 100,
MP = (125/100)*CP = (125/100)*100 = 125
SP = 125*(88/100) = Rs. 110
Profit % = (10/100)*100 = 10 %
Incorrect
Answer a
Let us assume the cost price be Rs. 100,
MP = (125/100)*CP = (125/100)*100 = 125
SP = 125*(88/100) = Rs. 110
Profit % = (10/100)*100 = 10 %
Question 16 of 20
16. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total number of students in different colleges and the percentage of students participated in cultural events.
Total students
% of students participated in cultural
P
1500
20 %
Q
950
12 %
R
1050
14 %
S
1200
18 %
T
800
25 %
Total number of students in college Q and T together is approximately what percentage of total number of students in college P?
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total number of students in different colleges and the percentage of students participated in cultural events.
Total students
% of students participated in cultural
P
1500
20 %
Q
950
12 %
R
1050
14 %
S
1200
18 %
T
800
25 %
Find the ratio between the total number of students participated in cultural events from college R to that of college S?
Correct
Answer d
The total number of students participated in cultural events from college R
= > 1050*(14/100) = 147
The total number of students participated in cultural events from college S
= > 1200*(18/100) = 216
Required ratio = 147: 216 = 49: 72
Incorrect
Answer d
The total number of students participated in cultural events from college R
= > 1050*(14/100) = 147
The total number of students participated in cultural events from college S
= > 1200*(18/100) = 216
Required ratio = 147: 216 = 49: 72
Question 18 of 20
18. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total number of students in different colleges and the percentage of students participated in cultural events.
Total students
% of students participated in cultural
P
1500
20 %
Q
950
12 %
R
1050
14 %
S
1200
18 %
T
800
25 %
If the ratio of girls and boys in the college Q and S is 3: 2 and 1: 1 respectively, then find the difference between the total number of boys in college Q to that of girls in college S together?
Correct
Answer c
The ratio of girls and boys in the college Q = 3: 2
The ratio of girls and boys in the college S = 1: 1
The total number of boys in college Q = 950*(2/5) = 380
The total number of girls in college S = 1200*(1/2) = 600
Required difference = 600 – 380 = 220
Incorrect
Answer c
The ratio of girls and boys in the college Q = 3: 2
The ratio of girls and boys in the college S = 1: 1
The total number of boys in college Q = 950*(2/5) = 380
The total number of girls in college S = 1200*(1/2) = 600
Required difference = 600 – 380 = 220
Question 19 of 20
19. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total number of students in different colleges and the percentage of students participated in cultural events.
Total students
% of students participated in cultural
P
1500
20 %
Q
950
12 %
R
1050
14 %
S
1200
18 %
T
800
25 %
Find the average number of students participated in cultural events from college P and T together?
Correct
Answer a
The total number of students participated in cultural events from college P and T together
= > 1500*(20/100) + 800*(25/100)
= > 300 + 200 = 500
Required average = 500/2 = 250
Incorrect
Answer a
The total number of students participated in cultural events from college P and T together
= > 1500*(20/100) + 800*(25/100)
= > 300 + 200 = 500
Required average = 500/2 = 250
Question 20 of 20
20. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total number of students in different colleges and the percentage of students participated in cultural events.
Total students
% of students participated in cultural
P
1500
20 %
Q
950
12 %
R
1050
14 %
S
1200
18 %
T
800
25 %
Find the total number of students didn’t participate any cultural events from college Q and R together?
Correct
Answer d
The total number of students didn’t participate any cultural events from college Q and R together
= > 950*(88/100) + 1050*(86/100)
= > 836 + 903
= > 1739
Incorrect
Answer d
The total number of students didn’t participate any cultural events from college Q and R together
Click “Start Quiz” to attend these Questions and view Solutions
Directions (Q. 1 – 5): What value should come in the place of question mark (?) in the following questions?
√65025 ÷ 5 × 12 =? – 16005 ÷ 15
1679
1785
1842
1568
None of these
56 % of 4450 + (5/13) of 7540 =?
5188
5546
5624
5392
None of these
? ÷ 5 + 125 × 11 = 4288 + 5572
42425
40560
39750
37240
None of these
3 3/13 of 4355 – 27^{2} =? + 561
11360
12780
14570
15890
None of these
1122 ÷ (22 % of 850) = 45 – ?
45
56
39
62
None of these
Directions (Q. 6 – 10): What value should come in the place of question mark (?) in the following number series?
1145, 1287, 1437, 1595, 1761, ?
1967
2013
2045
2121
1935
456, 543, 634, 741, 912, ?
1456
1339
1478
1391
1523
3000, 1508, 762, 389, ?
256.5
278
314
202.5
326
17, 9, 10, 16.5, 35, 90, ?
273
214.5
286
292
318
384, 204, 112, 64, ?
52
44
23
38
31
A bag contains 3 red marbles, 6 yellow marbles and 4 green marbles. If three marbles are taken at random, than what is the probability that 2 marbles are green?
34/127
56/131
27/143
78/91
None of these
Two- fifth of a number is equal to three-seventh of another number. The difference of these two numbers is 18. Find the numbers?
270 and 252
256 and 238
224 and 206
312 and 294
None of these
Applied to a bill for Rs. 90,000, the difference between a discount of 30 % and two successive discounts of 24 % and 5 % is?
1750
1980
2140
2560
None of these
P and Q started a business by investing Rs. 18000 and Rs. 24000 respectively. After 5 months, P invested Rs. 2000 more. And after 4 months, Q withdraws the whole amount. Find the share of Q, if the total profit at the end of the year is Rs. 73590?
28950
27680
35640
33290
None of these
A shopkeeper marks his goods at 25 % above its cost price and allows a discount of 12%. How much profit/Loss percent does he make?
10 % profit
15 % loss
12 % profit
8 % loss
None of these
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total number of students in different colleges and the percentage of students participated in cultural events.
Total students
% of students participated in cultural
P
1500
20 %
Q
950
12 %
R
1050
14 %
S
1200
18 %
T
800
25 %
Total number of students in college Q and T together is approximately what percentage of total number of students in college P?
128 %
117 %
135 %
150 %
104 %
Find the ratio between the total number of students participated in cultural events from college R to that of college S?
36 : 58
24 : 45
58 : 37
49 : 72
None of these
If the ratio of girls and boys in the college Q and S is 3: 2 and 1: 1 respectively, then find the difference between the total number of boys in college Q to that of girls in college S together?
280
310
220
390
None of these
Find the average number of students participated in cultural events from college P and T together?
250
320
370
410
None of these
Find the total number of students didn’t participate any cultural events from college Q and R together?
1893
2156
2348
1739
None of these
Answers:
Directions (Q. 1 – 5):
1.Answer a
(255/5)*12 =? – (16005/15)
612 = x – 1067
X = 612 + 1067
X = 1679
2.Answer d
(56/100)*4450 + (5/13)*7540 = x
X = 2492 + 2900
X = 5392
3.Answer a
(x/5) + 1375 = 4288 + 5572
(x/5) = 9860 – 1375
(x/5) = 8485
X = 42425
4.Answer b
(42/13)*4355 – 729 = x + 561
14070 -729 – 561 = x
X = 12780
5.Answer c
1122 ÷ [(22/100)*850] = 45 – x
(1122/187) = 45 – x
X = 45 – 6 = 39
Directions (Q. 6 – 10):
6.Answer e
The difference of difference of is, 8, 8, 8,…
The answer is, 1935
7.Answer b
The difference of difference is, 4^{1}, 4^{2}, 4^{3}, 4^{4},..
The answer is, 1339
8.Answer d
The pattern is, ÷ 2 + 8
The answer is, 202.5
9.Answer a
The pattern is, *0.5 + 0.5, *1 +1, *1.5 + 1.5, *2 +2, *2.5 +2.5, *3 + 3,….