Quantitative Aptitude: Simplification Questions Set 73

Directions(1-10): Find the approximate value of the following questions.

  1. (21.6) ² ÷ (– 7.2) ² × ? = 15483.36 – 15276.09
    20
    16
    18
    23
    26
    Option D
    (21.6) ² ÷ (– 7.2) ² × ? = 15483.36 – 15276.09
    =>9 × ? = 207.27
    ⇒ ? = 23.03 == 23

     

  2. 348 ÷ 29 × 15 + 156 = (?)³ + 120
    7
    5
    6
    4
    8
    Option C
    348 ÷ 29 × 15 + 156 = (?)³ + 120
    =>(?)³ = 180 + 156 – 120 = 216
    ⇒ ? = 6

     

  3. 25 × 3.25 + 50.4 ÷ 24 = ?
    80
    76
    70
    78
    83
    Option E
    25 × 3.25 + 50.4 ÷ 24 = ?
    =>? = 81.25+2.1 = 83.35 == 83

     

  4. 350% of ? ÷50+248=591
    2990
    3300
    2890
    4900
    3550
    Option D
    350% of ? ÷50+248=591
    =>350 × ?/100 × 1/50 = 343
    => ? = 4900

     

  5. 1/2 of 3842 + 15% of ? = 2449
    3225
    3000
    3520
    3110
    3340
    Option C
    1/2 of 3842 + 15% of ? = 2449
    =>1/2 × 3842 + 15/100 × ? = 2449
    =>? = (528 × 100)/15
    =>? = 3520

     

  6. 3.2% of 500 × 2.4% of ? = 288
    818
    900
    750
    660
    840
    Option C
    16×2.4/100 𝑥 = 288
    =>? = 750

     

  7. (𝟐√𝟑𝟗𝟐 – 𝟐𝟏) + (√𝟖– 𝟕)^𝟐 = (? )^2
    ±4
    ±1
    ±6
    ±2
    ±7
    Option C
    (𝟐√𝟑𝟗𝟐 – 𝟐𝟏) + (√𝟖– 𝟕)^𝟐 = (? )^2
    (?)² = 2 × 7√8 – 21 + 8 + 49 – 14√8
    = 57 – 21 = 36
    => ? = ±6

     

  8. (? )^ 𝟒 ÷ 𝟐𝟕 = 𝟐𝟒3
    9
    6
    7
    5
    8
    Option A
    (? )^ 𝟒 ÷ 𝟐𝟕 = 𝟐𝟒3
    (?)⁴ = 243 × 27
    =>(?)⁴ = (9) ⁴
    ⇒ ? = 9

     

  9. 46% of 450 +? % of 19.07 = 359.56
    890
    800
    778
    678
    980
    Option B
    46% of 450 +? % of 19.07 = 359.56
    =>? /100 × 19.07 = 359.56 – 207
    => ? = {152.56 × 100}/19.07
    =>? = 800

     

  10. 0.03 × 0.01 – 0.003 ÷ 100 + 0.03 =?
    0.06
    0.05
    0.03
    0.04
    0.07
    Option C
    0.03 × 0.01 – 0.003 ÷ 100 + 0.03 =?
    ? = 0.0003 – 0.00003 + 0.03 = 0.03027 == 0.03

     


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