Crack IBPS Exam 2017 – Quantitative Aptitude Scoring Part (Day-17)

    Crack IBPS Exam 2017 - Quantitative Aptitude Scoring Part (Day-1)



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    Direction (1-10): What value should come in place of question mark (?) in the following questions?
    1). √? =(153 × 46) ÷ 18

    149769
    151321
    152881
    154449
    None of these

    1). Answer: c)
    √? = 153 × 46 / 18 = 391
    ? = (391)^2 = 152881

    2. (3834 ÷ 27) × (3920 ÷ 112) = ?

    4210
    4430
    4560
    4750
    4970
    2). Answer: e)
    ? = 3834 / 27 × 3920 / 112 = 142 × 35 = 4970

    3. 2.8% of 1220 + 7.4% of 780 = ?

    87.72
    91.88
    93.42
    94.56
    None of these
    3). Answer: b)
    ? = 2.8 × 1220 / 100 + 7.4 × 780 / 100
    ? = 34.16 + 57.72 = 91.88


    4. 0.6 × 2.8 × 3.5 ÷ 0.0049 = ?

    840
    900
    1080
    1200
    1250
    4). Answer: d)
    ? = 0.6 × 2.8 × 3.5 / 0.0049
    ? = 5.88 / 0.0049 = 1200


    5). 30% of √15625 + 70% of ³√3375 = ?

    48
    55
    64
    72
    75
    5). Answer: a)
    ? = 30/100 × 125 + 70 /100 × 15
    ? = 37.5 + 10.5 = 48


    6. (125 ÷ 0.5) ÷ 0.5 = 80% of?

    500
    525
    550
    600
    625
    6). Answer: e)
    80 / 100 × ? = (125 ÷ 0.5) ÷ 0.5
    80/100 × ? = 250 ÷ 0.5 = 500
    ? = 500 × 100 /80 = 625


    7. √√194481 = ?

    17
    19
    21
    23
    27
    7). Answer: c)
    √√194481 = √441 = 21


    8. 8.5 / 0.25 + 4.4 / 0.2 = ?% of 80

    60
    64
    70
    75
    80
    8). Answer: c)
    8.5 / 0.25 + 4.4 / 0.2 = 80 × ? / 100
    or, 8.5 × 4 + 4.4 × 5 = 4 × ? / 5
    ? = (34 + 22) × 5 / 4 = 70

    9. 3/5 of 4/7 of 9/11 of 21175 = 2^2 × 3^3 × ?

    45
    48
    51
    54
    55
    9). Answer: e)
    ? = 3 × 4 × 9 × 21175 / (5 × 7 × 11 × 2^2 × 3^3)
    ? = 21175 / (5 × 7 × 11)
    ? = 21175 / 385 = 55

    10. [³√(√83521)]^(3/2) = ?

    13
    17
    21
    23
    29
    10). Answer: b)
    ? = [³√(√83521)]^(3/2)
    ? = [³√289]^(3/2)
    ? = [(289)^(1/3)]^(3/2)
    ? = [(289)^(1/2)
    ? = 17

    Direction (11-20): What approximate value should come in place of question mark (?) in the following questions?
    11. 68% of 1288 + 26% of 734 - 215 = ?

    620
    930
    540
    850
    710
    11). Answer: d)
    ? = 68 × 1288 / 100 + 26 × 734 / 100 – 215
    ? = 875.84 + 190.84 - 215
    ? ≈ 876 + 191 - 215 = 852 ≈ 850

    12. (32.05)^2 - (18.9)^2 - (11.9)^2 = ?

    670
    530
    420
    780
    960
    12). Answer: b)
    ? = (32.05)^2 - (18.9)^2 - (11.9)^2
    ? ≈ 1027 - 357 - 144 = 526 ≈ 530

    13. 6578 ÷ 67 × 15 = ? × 6

    200
    250
    150
    100
    300
    13). Answer: b)
    ? = 6578 × 15 / (67 × 6)
    ? = 245.44 ≈ 250

    14. 679 / 45 ÷ 23 / 2130 × 126 / 169 = ?

    540
    760
    800
    1260
    1040
    14). Answer: e)
    ? ≈ 680 / 45 × 2130 / 23 × 126 / 170
    ? = 1043.35 ≈ 1040

    15. √5687 × √1245 ÷ √689 = ? ÷ 13

    840
    910
    1320
    1120
    1550
    15). Answer: c)
    √5687 × √1245 ÷ √689 = ? ÷ 13
    ? = √5687 × √1245 × 13 / √689
    ? = 75.4 × 35.2 × 13 / 26.2
    ? = 1316.9 ≈ 1320

    16. 339% of 705.62 + 136% of 1329 = ?

    3600
    4500
    4200
    3900
    4800

    16). Answer: c)
    ? ≈ 340 × 705 / 100 + 136 × 1330 / 100
    ? = 2397 + 1808.8 = 4205.8 ≈ 4200

    17. 29.78 × 14.12 + 40.65 × 11.79 = ?

    850
    900
    950
    1000
    1050
    17). Answer: b)
    ? ≈ 30 × 14 + 40 × 12 = 420 + 480 = 900

    18. 570.80 × 9.09 × ? = 230855

    45
    49
    41
    54
    59
    18). Answer: a)
    ? ≈ 230855 / (570 × 9) = 45


    19. 33.33 × 333.3 = ?

    10010
    11000
    11110
    10111
    10001
    19). Answer: c)
    ? = 33.33 × 333.3
    ? = 3333 × 3333 / 1000
    = 11108.889 ≈ 11110


    20. 1.71% of 1606 + 0.705% of 1005 = ?

    31
    27
    21
    34
    37
    20). Answer: d)
    ? ≈ 1.7 × 1600/100 + 0.7 × 1000 /100
    ? = 27.2 + 7
    ? = 34.2 ≈ 34

    Direction (21 – 25): In the following number series only one number is wrong. Find out the wrong number.21. 6, 1338, 3074, 5298, ?

    7296
    9428
    6988
    8106
    None of these
    21). Answer: d)
    The difference between numbers is, +1³+11³ , +2³+12³ ,+3³+13³ , +4³+14³


    22. 2199, 868, 139, 14, ?

    26
    8
    3
    19
    None of these
    22). Answer: e)
    The difference between numbers is - 11³ , - 9³ , - 5³ , +1³ , ….
    (i.e. the difference between the numbers is 2 [11-9], 4 [9-5], 6 [1-(-5)] ,…..)


    23. 3, 36, 153, 408, ?

    855
    696
    723
    914
    None of these
    23). Answer: a)
    The series is,
    (1³ +1³) + 1 = 3
    (2³ +3³) + 1 = 36
    (3³ +5³) + 1 = 153
    (4³ +7³) + 1 = 408
    (5³ +9³) + 1 = 855

    24. 10, 36, 92, 190, 342, ?

    475
    560
    624
    536
    None of these
    24). Answer: b)
    The series is,
    (1³ +2³) + 1 = 10
    (2³ +3³) + 1 = 36
    (3³ +4³) + 1 = 92
    (4³ +5³) + 1 = 190
    (5³ +6³) + 1 = 342
    (6³ +7³) + 1 = 560

    25. 2, 65, 730, 4097,?

    8456
    10326
    15626
    12756
    7156
    25). Answer: c)
    The series is,
    (1³ x 1³) + 1 = 2
    (2³ x 2³) + 1 = 65
    (3³ x 3³) + 1 = 730
    (4³ x 4³) + 1 = 4097
    (5³ x 5³) +1 = 15626

    Direction (26-30): In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and given answer:
    a) if x< y
    b) if x ≤ y
    c) if x = y
    d) if x> y
    e) if x ≥ y

    26. I. 16x^2 + 20x + 6 = 0
    II. 10y^2 + 38y + 24 = 0

    a)
    b)
    c)
    d)
    e)
    26). Answer: d)
    I. 16x^2 + 20x + 6 = 0
    or, 16x^2 +12x+8x+6 = 0
    or, 4x(4x+3)+y(4x+3)=0
    or, (4x + 3)(4x + 2) = 0
    x = -(3/4) or –(1/2)
    II. 10y^2 +38y+24 = 0
    or, 5y^2 +19y+12 = 0
    or, 5y^2+15y+4y+12=0
    or, (5y + 4) (y + 3) = o
    y = -(4/5) or -3
    Hence, x> y

    27. I. 18x^2 + 18x + 4 = 0
    II. 12y^2 + 29y + 14 = 0

    a)
    b)
    c)
    d)
    e)
    27). Answer: e)
    I. 18x^2 +18x + 4 = 0
    or, 9x^2 +9x+2 =0
    or, 9x^2+6x+3x+2 =0
    or, 3x (3x +2) + 1(3x + 2) = 0
    x = -(1/3) or –(2/3)
    II. 12y^2 +29y+14=0
    or, 12y^2 +21y+8y+14 = 0
    or, 3y(4y 7) + 2(4y + 7) =0
    or, (3y + 2) (4y + 7) = 0
    y= -(2/3) or –(7/4)
    Hence, x ≥ y

    28. I. 8x^2 + 6x = 5
    II. 12y^2 – 22y + 8 = 0

    a)
    b)
    c)
    d)
    e)
    28). Answer: b)
    I. 8x^2+6x-5=0
    or,2x(4x+5)-1( 4x+5) = 0
    or, (2x-1)(4x+5) = 0
    x = (1/2) or –(5/4)
    II.12y^2 -22y+8=0
    or, 12y^2 – 16y – 6y + 8 = 0
    or, 4y(3y - 4) – 2 (3y -4) = 0
    or, (4y - 2) (3y- 4) = 0
    y = (1/2) or (4/3)
    Hence, x ≤ y

    29. I. 17x^2 + 48x = 9
    II. 13y^2 = 32y – 12

    a)
    b)
    c)
    d)
    e)
    29). Answer: a)
    I. 17x^2 + 48x – 9 = 0
    or, 17x^2 + 51x – 3x – 9 = 0
    or, (17x -3)(x+3) = 0
    x = (3/17) or -3
    II. 13y^2 – 32y + 12 = 0
    Or, 13y^2 – 26y – 6y + 12 = 0
    Or, (13y - 6)(y -2) = 0
    Y = (6/13) or 2
    Hence x< y.

    30. I. 4x + 7y = 209
    II. 12x - 14y = -38

    a)
    b)
    c)
    d)
    e)
    30). Answer: c)
    I. 4x + 7y = 209
    Or, 8x+14y=418 …(i)
    II. 12x - 14y = -38
    From (i) and (ii), we get
    20x = 380
    x = 19
    putting value of x in equation (i),
    we get y = 19
    x = y



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