Quant Test for IBPS Clerk 2018 Prelim Exam Set – 25

Directions(1-5): What will come in place of question mark in the following questions.

  1. [400/5^2] *[180/3^2] = ?
    415
    305
    320
    300
    404
    Option C
    [400/5^2] *[180/3^2] = ?
    => ? = 16*20
    => ? = 320

     

  2. 880.03 – ? = (5.99^3 – 8.01^2)
    728
    720
    710
    690
    700
    Option A
    880.03 – ? = (5.99^3 – 8.01^2)
    => 880 – ? = (6^3 – 8^2)
    => 880 – ? = 152
    => ? = 728

     

  3. [8.03^2 – 11.99]- ? = 203.99
    -148
    -152
    -125
    -100
    -140
    Option B
    [8.03^2 – 11.99]- ? = 203.99
    => 64 – 12 – ? = 204
    => 52 -? = 204
    => ? = -152

     

  4. ? – (71.98% of 900 + 49.97) = 302.98
    1015
    1010
    880
    1001
    950
    Option D
    ? – (71.98% of 900 + 49.97) = 302.98
    => ? – (72/100*900 + 50) = 303
    => ? – (648 + 50) = 303
    => ? – 698 = 303
    => ?= 1001

     

  5. [300+ 16% of 1900] + [41% of 1300] = ?
    1125
    1100
    1114
    1137
    1133
    Option D
    [300+ 16% of 1900] + [41% of 1300] = ?
    => ? = [300+304]+[533] => ? = 1137

     

  6. Ram had two laptops in his shop with marked price of Rs. 50000 and Rs. 36000 resp. He sold these laptops at 3x% and 2x% discount resp. If the sum of the selling prices was Rs. 77120 then find x.
    2
    5
    3
    4
    6
    Option D
    50000(1-3x/100) + 36000*(1-2x/100) = 77120
    => 50000 – 1500x + 36000 – 720x = 77120
    => 2220x = 8880
    => x = 4

     

  7. The ratio of number of males and females in a village is 7:4 resp. If the number of males is increased by x% and number of females is increased by (x+20)% , the ratio of male and female will become is 3:2 resp. Find the value of x.
    25
    10
    15
    20
    22
    Option D
    7*(100+x)%/4(100+x+20)% = 3:2
    =>7(100+x) = 6(120+x)
    => 7x-6x = 720-700
    => x = 20

     

  8. A, B and C can complete a task in x days. While A and B together can complete the same task in (x+2) days. If C alone can complete the task in 24 days then find the value of x.
    4
    6
    3
    5
    8
    Option B
    1/x – 1/(x+2) =1/24
    => x(x+8)-6(x+8) = 0
    => (x-6)(x+8) = 0
    => x = 6

     

  9. Seeta and Geeta can complete a task in (x – 10) days and (x+10) days resp. While working individually. While working together, they can complete it in (4x-10)/8 days. In how many days can Seeta complete the task alone?
    40
    20
    50
    30
    60
    Option D
    1/(x-10 ) + 1/(x+10) = 8/(4x-10)
    => x = 40
    Seeta can complete the task alone in 30 days.

     

  10. A bag contains 2 red balls, x yellow balls and 7 green balls. The probability of drawing a green ball from a bag is 0.5. If (x+3) balls are taken out from the bag at random, then find the probability that all the green balls are selected.
    1/415
    1/429
    1/400
    1/444
    1/423
    Option B
    7/(2+x+7) = 0.5
    => x = 5 balls
    Now, (x+3) = 8 balls
    Required Probability = [ 7C7*2C1 + 7C7*5C1] /14C8
    = 1/429

     


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