Approximation Test 7-Solved questions with detailed explanations for SSC, IBPS, SBI PO, RRB, RBI, CSE, CGL, CHSL, CDA, CSE, UPSC

6)

What approximate value should come in place of the question mark (?) in the given questions?

12×958÷17=?

A)
532
B)
676
C)
765
D)
483
E)
None of these

Discussion

7)

$8^{1.38} \times 8^{1.63} = ?$

A)
680
B)
218
C)
726
D)
512
E)
134

Answer: Option C

Explanation

Given ,

$8^{1.38} \times 8^{1.63} = ?$

= $8^{1.38} \times 8^{1.63}$

= $8^{1.38 + 1.63}$

= $8^{3.07} \approx 8^{3} \approx 512$

Hence, Option C is correct.

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Approximation

Discussion

8)

(8423 +3120 +6543)÷(1536 +377+189)

A)
5
B)
14
C)
9
D)
18
E)
3

Discussion

9)

$121 \div (\frac{7}{5} \times \frac{3}{8} \times \frac{4}{5}) = ?$

A)
168
B)
288
C)
208
D)
298
E)
198

Answer: Option B

Explanation

Given,

$121 \div (\frac{7}{5} \times \frac{3}{8} \times \frac{4}{5}) = ?$

$= 121 \div (\frac{7}{5} \times \frac{3}{2} \times \frac{1}{5}) = ? = 121 \div (\frac{7}{5} \times \frac{3}{2} \times \frac{1}{5}) = 121 \div (\frac{21}{50}) = 121 \times (\frac{50}{21}) = \frac{6050}{21} = 288.09 \approx 288$

Hence, Option B is correct.

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Approximation

Discussion

10)

(5995+4874+3333)÷(713+509+326)=?

A)
11
B)
9
C)
11.5
D)
7.5
E)
12

Discussion

Approximation Test-7 (Complete Revision)

Answer: Option B

Answer: Option C

Answer: Option C

Answer: Option B

Answer: Option B