Quant Test for IBPS Clerk 2018 Prelim Exam Set – 05

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

  1. 450,449,460,430,494,369,585
    494
    450
    369
    460
    585
    Option D
    -(1)^3
    +(2)^3
    -(3)^3
    +(4)^3
    -(5)^3
    +(6)^3
    457 should be in place of 460.

     

  2. 20,27,41,64,98,150,207
    41
    20
    27
    64
    150
    Option E
    +(3*2)+1
    +(4*3)+2
    +(5*4)+3
    +(6*5)+4
    +(7*6)+5
    +(8*7)+6
    145 should be in place of 150.

     

  3. 102,50,48,69,140,330
    48
    140
    50
    102
    330
    Option B
    *0.5-1
    *1-2
    *1.5-3
    *2-4
    *2.5-5
    134 should be in place of 140.

     

  4. 50,113,239,454,800,1309
    800
    50
    239
    113
    454
    Option A
    +(4^3 -1)
    +(5^3+1)
    +(6^3 -1)
    +(7^3+1)
    +(8^3 -1)
    798 should be in place of 800.

     

  5. 28,53,278,903,2128,4256
    53
    278
    4256
    2128
    28
    Option C
    +5^2
    +15^2
    +25^2
    +35^2
    +45^2
    4153 should be in place of 4256.

     

  6. The average weight of a group of (x-3) students is (x-4) kg. If a teacher of weight 54 kg joins the class, then average weight of the group increased by 1 kg. Find the strength of the group excluding the teacher.
    10
    25
    14
    23
    35
    Option D
    {(x-3)(x-4)+54}/{(x-3)+1} = (x-4)+1
    => x = 26
    Strength of the group = 26 – 3 = 23

     

  7. 9 women and 6 children can complete a given work in 8 days. If additional 4 women joined them., then they could finish (2/3) of the work in 4 days. Find the time taken by 24 women to complete the work.
    6 days
    7 days
    4 days
    8 days
    5 days
    Option C
    (9W + 6C)*8 = (9W + 6C + 4W)*[1/(2/3)]*4
    => (18W + 12C) = (13W + 6C)*(3/2)
    => 36W + 24C = 39W + 18C
    => 3W = 6C => 1W = 2C
    Now, 9W + 6C = 18C + 6C = 24 C
    Then,24W = 48 C
    => 8*24/48 = 4 days

     

  8. A article is sold at a profit of 21%. If the cost price is increased by 10% and the selling price remains the same, then find the profit percentage.
    50%
    40%
    30%
    10%
    20%
    Option D
    Let CP be x.
    SP = 1.21x
    Increased cost = 1.1x
    Profit = 1.21x – 1.1x = 0.11x
    Profit% = 0.11x/1.1x*100 = 10%

     

  9. Find the number of words that can be formed using the letters of the word “IRIDIUM” so that vowels always come together.
    90
    96
    75
    88
    80
    Option B
    Required Probability = 4!*4!/3! = 96

     

  10. A bag contains 54 balls of three different colors Red, Green and Yellow. The probability of drawing a green ball is (1/3) and the number of yellow balls is twice the number of red balls in the bag. Find the probability of drawing a yellow ball from the bag.
    2/7
    5/9
    7/10
    4/9
    3/11
    Option D
    Number of green balls = 54 *1/3 =18
    Remaining = 54 – 18 = 36
    Let red and yellow ball be x and 2x resp.
    Therefore, 2x+x = 36
    => 3x = 36
    => x = 12
    Number of yellow balls = 12*2 = 24
    Required probability = 24/54 = 4/9

     


Related posts

Leave a Comment