Mixed Quantitative Aptitude Questions Set 153

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

  1. (25)^(2+?) = (625) ÷ 125 × 3125 ÷ 25
    1
    4
    2
    3
    0
    Option E
    (25)^(2+?) = (625) ÷ 125 × 3125 ÷ 25
    =>(25)^2+? = 625/125 × 3125/25
    = 5 × 125 = 625
    ⇒ (25)^2
    =>2 +? = 2
    =>? = 0

     

  2. ? × 1.3 × 6.5 = 1.17 × 24.7
    4.41
    2.12
    5.13
    3.42
    4.11
    Option D
    ? × 1.3 × 6.5 = 1.17 × 24.7
    =>? = [117 × 247]/[13 × 65 × 10] = 3.42

     

  3. 8 (1/3) × 2(2/5) +? = 14(1/6) × 3( 3/17)
    25
    20
    13
    17
    18
    Option A
    8 (1/3) × 2(2/5) +? = 14(1/6) × 3( 3/17)
    =>25/ 3 × 12/5 +? = 85/6 × 54/17
    =>5 × 4 + ? =9 × 5
    => ? = 45 – 20
    => ? = 25

     

  4. (?)² ÷ 12.5 = 6.25 × 3.125 ÷ 1.5625
    14.4
    12.5
    13.3
    16.8
    10.1
    Option B
    (?)² ÷ 12.5 = 6.25 × 3.125 ÷ 1.5625
    (?)² ÷ 12.5 = 6.25 × 3.125 ÷ 1.5625
    => (? )^2 = 6.25 × 3.125 × 12.5 1.5625
    =>(? )^2 = 625 × 3125 × 125 15625 × 100
    => (? )^2 = 125 × 125 100
    => (? )^2 = 12.5 × 12.5
    =>? = 12.5

     

  5. 55% of 320 + 30% of 1080 = 20 × ?
    20
    16
    25
    17
    14
    Option C
    55% of 320 + 30% of 1080 = 20 × ?
    =>55/100 × 320 + 30/100 × 1080 = 20 ×?
    =>176 + 324 = 20 × ?
    =>? = 500/20 = 25

     


  6. Directions(6-10):
    Find the missing term ‘?’ of the following series.

  7. 2, 7, 28, 63, ?
    110
    116
    104
    126
    122
    Option D
    2, 7, 28, 63, ?
    1^3 + 1, 2^3 − 1, 3^3 + 1, 4^3 − 1, 5^3 + 1
    125 + 1 = 126

     

  8. 1, 2, 4.5, 11, 30, ?
    88
    80
    78
    75
    93
    Option E
    × 1 + 1,× 1.5 + 1.5,× 2 + 2,× 2.5 + 2.5,× 3 + 3
    => 30 × 3 + 3 = 93

     

  9. 2, 4, 16, ?, 132, 282
    44
    47
    52
    40
    56
    Option C
    2 + (1^2 + 1^3 ), 4 + (2^2 + 2^3 ), 16 + (3^2 + 3^3 ), 52 + (4^2 + 4^3 )
    => 16 + (3^2 + 3^3 ) = 52

     

  10. 6, 7, 24, ?, 882, 7947
    115
    125
    102
    98
    90
    Option B
    6 × 1 + 1, 7 × 3 + 3, 24 × 5 + 5, 125 × 7 + 7, 882 × 9 + 9
    => 24 × 5 + 5 = 125

     

  11. 7, 16, -2, 25, ?, 34
    −12
    −11
    −3
    −7
    −10
    Option B
    +9, −18, +27, −36, +45
    => 25 − 36 = −11

     


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