Approximation Question for SBI Clerk and Canara Bank PO 2018 Set-2

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.1 201 ÷ 12.98 × 104 ÷ 40.25 ÷ (25.4 ÷ 101) = ?2 ÷ 99.9

(A) 70

(B) 60

(C) 50

(D) 40

(E) 30

 

Q.2 753676 × 334 × 3 = ? × 700000

(A) 1200

(B) 1080

(C) 2000

(D) 1020

(E) None of these

 

Q.3 2120 × 1525 ÷ 78 = ?1/2 

(A) 550

(B) 500

(C) 530

(D) 470

(E) 450

Q.4  6
5
5
 of 269.95 = ?% of 2199.97

(A) 90

(B) 130

(C) 50

(D) 70

(E) None of these

 

Q.5 6999.97 + 70.03 × 40% of 23 = ? × 49

(A) 145

(B) 160

(C) 156

(D) 150

(E) 134

 

Answer 1. (D) 40

Explanation:

201 ÷ 12.98 × 104 ÷ 40.25 ÷ (25.4 ÷ 101) = ?2 ÷ 99.9

200 ÷ 13 × 104 ÷ 40 ÷ (25 ÷ 100) = ?2 ÷ 10

200 × 8 ÷ 40 × 100 ÷ 25 = ?2 ÷ 10

200 ÷ 5 × 4 = ?2 ÷ 10

40 × 4 × 10 = ?2

1600 = ?2

? = 40

 

Answer 2. (B) 1080

Explanation:

753676 × 334 × 3 = ? × 700000

753676 × 1002 = ? × 700000

753676 × 1000 ÷ 700000= ?

? = 107668 ÷ 100

? = 1076.68 ≈ 1080

 

Answer 3. (C) 530

Explanation:

2120 × 1525 ÷ 78 = ?1/2

≈ √2116 × √1521 ÷ 78 = ?1/2

46 × 39 ÷ 78 = ?1/2

46 × 3 ÷ 6 = ?1/2

46 ÷ 2 = ?1/2

?1/2 = 23

? = 529 ≈ 530

 

Answer 4. (A) 90

Explanation:

6
5
5
 of 269.95 = ?% of 2199.97
35
 5
 of 270 = ?% of 2200

7 × 270 = ? × 22

? = 7 × 270 ÷ 22

? = 1890 ÷ 22

? = 85.9 ≈ 90

 

Answer 5. (C) 156

Explanation:

6999.97 + 70.03 × 40% of 23 = ? × 49

7000 + 70 × 40% × 23 = ? × 49

7000 + 28 × 23 = ? × 49

7000 + 644 = ? × 49

7644 ÷ 49 = ?

? = 156

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