Approximation Question for SBI Clerk, Syndicate Bank PO and Canara Bank PO 2018

Directions (Q.1-5): What value will come in place of question mark (?) in the following questions: (You are not expected to calculate the exact value)

 

Q.1 (14.28% of 120)2 + ?% of 18.87 = − 37.08

(A) − 2150

(B) 1000

(C) 3000

(D) − 2000

(E) 1500

 

Q.2 [195.7 × 49.02 ÷ 699.8% of 64.031/3 ] × 17.9 = ?2

(A) 15

(B) 8

(C) 3

(D) 18

(E) 20

 

Q.3 321.08 × 9.93 + 3 × 123.98 = ?− 387.05

(A) 90

(B) 80

(C) 60

(D) 55

(E) 75

 

Q.4 (327.96 × ?) ÷ 188.03 = 60% of 136

(A) 35

(B) 70

(C) 60

(D) 50

(E) 90

 

Q.5 

243.96 + 3.13 − 101.98
          11.1% of 65
= ?1/2

(A) 1

(B) 7

(C) 12

(D) 21

(E) 29

 

Answer 1. (D) − 2000

Explanation: 

(14.28% of 120)2 + ?% of 18.87 = − 37.08

(15% of 120)2 + ?% of 19 = − 37

182 + ?% of 19 = − 37

324 + ?% of 19 = − 37

?% of 19 = − 37 − 324

?% of 19 = − 361

? = − 361 ÷ 19 × 100

? = − 1900 ≈ − 2000

 

Answer 2. (B) 8

Explanation:

[195.7 × 49.02 ÷ 699.8% of 64.031/3 ] × 17.9 = ?2

[196 × 49 ÷ 700% of 641/3 ] × 18 = ?2

14 × 7 ÷ (7 × 4) × 18 = ?2

63 = ?2

? = 7.93 ≈ 8

 

Answer 3. (C) 60

Explanation:

321.08 × 9.93 + 3 × 123.98 = ?− 387.05

321 × 10 + 3 × 124 = ?− 387

3210 + 372 + 387 = ?

3969 = ?

? = 63 ≈ 60

 

Answer 4. (D) 50

Explanation:

(327.96 × ?) ÷ 188.03 = 60% of 136

(328 × ?) ÷ 188 = 60% of 136

(328 × ?) ÷ 188 = 81.6

? = 81.6 × 188 ÷ 328

? = 46.7 ≈ 50

 

Answer 5. (B) 7

Explanation:

243.96 + 3.13 − 101.98
          11.1% of 65
= ?1/2
244 + 3 − 102
    11% of 65
= ?1/2
145
 7.15
= ?1/2
145
  7
= ?1/2

2.7 = ?1/2

? = (2.7)2

? = 7.29 ≈ 7

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