BANK & INSURANCE (APPROXIMATION PART 3)

Total Questions: 50

41. (8.101) × (15.9) + (7.98)² = ?

Correct Answer: (b) 192
Solution:

8.101 × 15.9 ≈ 8.1 × 16 = 129.6

(7.98)² ≈ 8² = 64

Total ≈ 129.6 + 64 = 193.6 ≈ 192

42. 12.25² + 24.99% of 864.12 = (? + 39.87) × 5.99

Correct Answer: (c) 20
Solution:

12.25² ≈ 150

24.99% of 864.12 ≈ 0.25 × 864 ≈ 216

LHS ≈ 150 + 216 = 366

? + 39.87 ≈ 366 ÷ 5.99 ≈ 61

? ≈ 61 − 40 ≈ 20

43. √675 × 4.78 + (959.66 ÷ 7.74) = ?% of 624.89

Correct Answer: (d) 40
Solution:

√675 ≈ 26, so √675 × 4.78 ≈ 26 × 4.8 ≈ 125

959.66 ÷ 7.74 ≈ 960 ÷ 8 ≈ 120

Sum ≈ 245

Percent ≈ (245/625)×100 ≈ 39% ≈ 40%

44. (20.12 × 35.45) + 14.99² = ? × 4.75

Correct Answer: (a) 185
Solution:

20.12 × 35.45 ≈ 20 × 35 = 700

14.99² ≈ 15² = 225

Total ≈ 925

? ≈ 925 ÷ 4.75 ≈ 925 ÷ 5 ≈ 185

45. ?² + (19.89 + 39.76) × 5.87 = 45.43% of 1199.67 + 15.88

Correct Answer: (b) 14
Solution:

(19.89 + 39.76) = 59.65 and 59.65 × 5.87 ≈ 60 × 6 = 360

45.43% of 1199.67 ≈ 0.4543 × 1200 ≈ 545

RHS ≈ 545 + 16 = 561

?² ≈ 561 − 360 = 201

? ≈ √201 ≈ 14

46. 20.19% of 24.67% of 1499.87 + 124.78 = ? × 19.67

Correct Answer: (a) 10
Solution:

24.67% of 1499.87 ≈ 0.2467 × 1500 ≈ 370

20.19% of 370 ≈ 0.2019 × 370 ≈ 75

75 + 124.78 ≈ 200

? ≈ 200 ÷ 19.67 ≈ 10

47. (12.09)² × 5.98 ÷ 26.95 = ? − 17.98

Correct Answer: (d) 50
Solution:

12.09² ≈ 12² = 144

144 × 5.98 ≈ 144 × 6 = 864

864 ÷ 26.95 ≈ 864 ÷ 27 ≈ 32

? ≈ 32 + 17.98 ≈ 50

48. (96 − 21) ÷ (45 − 31) = ? ÷ 8.99

Correct Answer: (b) 45
Solution:

(96 − 21) = 75 and (45 − 31) = 14

LHS = 75 ÷ 14 ≈ 5.36

? ÷ 8.99 ≈ 5.36 ⇒ ? ≈ 5.36 × 8.99 ≈ 48 ≈ 45

49. 51.99 ÷ 12.89 × 62.06 = ? + 42.09

Correct Answer: (c) 206
Solution:

51.99 ÷ 12.89 ≈ 52 ÷ 13 ≈ 4

4 × 62.06 ≈ 248

? ≈ 248 − 42 ≈ 206

50. (28.99 − 18.09)² = ? + 11.11

Correct Answer: (d) 110
Solution:

28.99 − 18.09 = 10.90

10.90² ≈ 118.81

? ≈ 118.81 − 11.11 ≈ 108 ≈ 110