Aptitude Problems on Simplification Questions with Solutions Pdf - 2

Question: 6

A boy multiplied 423 by a number and obtained 65589 as his answer. If both the fives in the answer are wrong and all the other figures are correct, the correct answer is

(A) 60489

(B) 61189

(C) 62189

(D) 62389

Ans: A

Among the given numbers, only 60489 is a multiple of 423.

Question: 7

(8 ÷ 88) x 8888088 = ?

(A) 808000

(B) 808008

(C) 808080

(D) 808088

Ans: B

Given expression = $${8} / {88}$$ × 8888088 = $${1} / {11} × 8888088$$ = 808008.

Question: 8

N number of persons decided to raise Rs. 3 lakhs by equal contribution from each. Had they contributed Rs. 50 each extra, the contribution would have been Rs. 3.25 lakhs. How many persons are there?

(A) 400

(B) 450

(C) 500

(D) 600

Ans: C

N × 50 = (325000 – 300000) = 25000

N = 500.

Question: 9

The marks scored in an examination are converted from 50 to 10 for the purpose of internal assessment. The highest marks were 47 and the lowest were 14. The difference between the maximum and the minimum internal assessment scores is

(A) 1.3

(B) 3.3

(C) 4.8

(D) 6.6

Ans: D

Maximum internal assessment score = $$({47} / {50} × 10)$$ = 9.4.

Minimum internal assessment score = $$({14} / {50} × 10)$$ = 2.8.

∴ Required difference = (9.4 – 2.8) = 6.6.

Question: 10

The value of 999 $${995} / 999×999$$ is

(A) 990809

(B) 998996

(C) 998999

(D) 999824

Ans: B

Given expression = $$(1000 – {4} / {999}) × 999$$ = 999000 – 4 = 998996.

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