Mathematical Operations(Reasoning Aptitude ) Questions and Answers
Explanation:-
Answer: Option C. -> 19 ÷ 5 + 4 – 2 x 4 = 13Answer: (c)
- ⇒ ÷, + ⇒ x, ÷ ⇒ x, - ⇒ +,
From option (a), 19 + 5 - 4 x 2 ÷ 4 = 11
⇒ 19 x 5 ÷ 4 + 2 - 4 = 11
⇒ 95/4 + 2 - 4 ≠ 11
From option (b),
19 x 5 - 4 ÷ 2 + 4 = 16
⇒ 19 + 5 ÷ 4 - 2 x 4 = 16
⇒ 19 + 5/4 - 8 ≠ 16
From option (c),
19 ÷ 5 + 4 - 2 x 4 = 13
⇒ 19 - 5 x 4 ÷ 2 + 4 = 13
⇒ 19 - 5 x 2 + 4 = 13
⇒ 19 - 10 + 4 = 13
Therefore 13 = 13
As,we got our answer, there is no need to check option (d).
Explanation:-
Answer: Option D. -> 97Answer: (d)
According to the question,
? = 12 + (3 × 1) + 4 - 1
from the question by changing the symbols, we get
= 12 × (3 - 1) × 4 + 1 (using VBODMAS rule)
= 12 × 2 × 4 + 1
= 96 + 1 = 97
Explanation:-
Answer: Option A. -> 30 – 6 + 5 x 4 ÷2 = 27Answer: (a)
- ⇒ ÷, + ⇒ x, ÷ ⇒ x, - ⇒ +,
From option (a),
30 - 6 + 5 x 4 ÷ 2 = 27
⇒ 30 ÷ 6 x 5 + 4 - 2 = 27
⇒ 5 x 5 + 4 - 2 = 27
⇒ 25 + 4 - 2 = 27
Therefore 27 = 27
Explanation:-
Answer: Option A. -> 9Answer: (a)
According to the question,
? = 54 ÷ 16 - 3 × 6 + 2
from the question by changing the symbols, we get
= 54 - 16 × 3 + 6 ÷ 2 (using VBODMAS rule)
= 54 - 16 × 3 + 3
= 54 - 48 + 3
= 6 + 3 = 9
Explanation:-
Answer: Option C. -> 25 – 15 + 5 ÷ 4 × 16 = 21Answer: (c)
From option (c),
25 + 15 ÷ 5 × 4 - 16 = 21 (using VBODMAS rule)
⇒ 25 + 3 × 4 - 16 = 21
⇒ 25 + 12 - 16 = 21
⇒ 37 - 16 = 21
⇒ 21 = 21
LHS = RHS
So, option (c) is correct.
Explanation:-
Answer: Option E. -> None of theseAnswer: (e)
Using the correct symbols,
we have: Given expression as
= 27+ 81 ÷ 9 – 6
= 27 + 9 - 6
= 36 - 6 = 30.