Mixed Quantitative Aptitude Questions Set 109

Directions(1-5): Find the wrong number from the following series.

  1. 22,46,21,43,20,42
    42
    20
    46
    21
    43
    Option E
    *2+2
    /2-2
    *2+2
    /2-2
    *2+2
    44 should be in place of 43.

     

  2. 4,9,27,125,726
    726
    27
    9
    125
    4
    Option B
    2!+2
    3!+3
    4!+4
    5!+5
    6!+6
    28 should be in place of 27.

     

  3. 12,21,39,65,102,147
    21
    12
    39
    65
    147
    Option D
    +(9*1)
    +(9*2)
    +(9*3)
    +(9*4)
    +(9*5)
    66 should be in place of 65.

     

  4. 39,88,152,233,345,454
    152
    88
    345
    39
    233
    Option C
    +7^2
    +8^2
    +9^2
    +10^2
    +11^2
    333 should be in place of 345.

     

  5. 120,80,60,90,180,450
    120
    80
    60
    90
    450
    Option B
    *0.5
    *1
    *1.5
    *2
    *2.5
    60 should be replaced in place of 80.

     

  6. P and Q can clean a room in 18 hours and 15 hours resp. If P works for 3 hours and Q works for the remaining time only, in how many hours would Q complete the remaining work?
    10(1/6) hours
    12(1/2) hours
    8(1/4) hours
    13(1/3) hours
    10(1/5) hours
    Option B
    Work done in first 3 hours = 3*1/18 = 1/6
    Remaining work = 1-1/6 = 5/6
    Work can be completed by Q = 5/6*15 = 12(1/2) hours

     

  7. A train running at a speed of 54 km/hr crosses a man standing on the platform in 28 seconds. What would be the length of the platform which is 33.33% more than the length of the train?
    550 m
    444 m
    440 m
    560 m
    500 m
    Option D
    Speed of train = 54 km/hr. = 15 m/s.
    Length of train = 15*28 = 420 m
    Length of platform = 420 + 33.33% of 420 = 420+140 = 560 m

     

  8. The average runs scored by the team India in the first 20 overs of a one-day match (50 overs) is 5.45 and in the next 10 overs is 6.1. If the total runs scored by team India in 50 overs is 320, find the average runs scored in the last 20 overs.
    7.5
    6.6
    7.7
    5.2
    8.8
    Option A
    Runs scored by team India in the first 30 overs
    = 5.45*20+6.1*10 = 170
    Runs scored in last 20 overs = 320 – 170 = 150
    Required average runs scored in the last 20 overs = 150/20 = 7.5

     

  9. A cylinder of radius 27 cm and height 20 cm is melted down and cast into small cones of radius 9 cm and height 10 cm. Find the number of cones formed.
    62
    40
    50
    45
    54
    Option E
    Number of cones formed = Volume of cylinder/Volume of cone
    = (pi*r*r*h)/(1/3*pi*r1*r1*h) = 54

     

  10. In how many ways can 2 women and 4 men stand in a queue such that none of the women stand on either ends of the queue?
    257 ways
    288 ways
    250 ways
    222 ways
    280 ways
    Option B
    Number of ways for the women to stand = 4C2*2!
    = 12
    Number of ways for the remaining 4 men to stand = 4! = 24
    Required number of possible arrangements = 12*24 = 288 ways

     


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