Reasoning Aptitude
MATHEMATICAL OPERATIONS MCQs
Total Questions : 233
| Page 19 of 24 pages
Answer: Option A. -> 30 – 6 + 5 x 4 ÷2 = 27
Answer: (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
Answer: (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
Answer: Option A. -> 9
Answer: (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
Answer: (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
Answer: Option D. -> 97
Answer: (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
Answer: (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
Answer: Option B. -> 5
Answer: (b)
According to the question,
? = 5 C 5 D 5 A 5 B 5
from the question by changing the symbols, we get
= 5 × 5 ÷ 5 + 5 - 5 (using VBODMAS rule)
= 5 × 1 + 5 - 5
= 10 - 5 = 5
Answer: (b)
According to the question,
? = 5 C 5 D 5 A 5 B 5
from the question by changing the symbols, we get
= 5 × 5 ÷ 5 + 5 - 5 (using VBODMAS rule)
= 5 × 1 + 5 - 5
= 10 - 5 = 5
Answer: Option C. -> 25 – 15 + 5 ÷ 4 × 16 = 21
Answer: (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.
Answer: (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.
Answer: Option E. -> None of these
Answer: (e)
Using the correct symbols,
we have: Given expression as
= 27+ 81 ÷ 9 – 6
= 27 + 9 - 6
= 36 - 6 = 30.
Answer: (e)
Using the correct symbols,
we have: Given expression as
= 27+ 81 ÷ 9 – 6
= 27 + 9 - 6
= 36 - 6 = 30.
Answer: Option B. -> 2
Answer: (b)
Using the correct symbols,
we have: Given expression
= (3 x 15 + 19) ÷ 8 - 6
= 64 ÷ 8 - 6
= 8 - 6 = 2.
Answer: (b)
Using the correct symbols,
we have: Given expression
= (3 x 15 + 19) ÷ 8 - 6
= 64 ÷ 8 - 6
= 8 - 6 = 2.
Answer: Option B. -> 27
Answer: (b)
Using the correct symbols,
we have: Given expression
= 16 + 4 x 5 - 72 ÷ 8
= 16+ 20 - 9
= 36 –9 = 27.
Answer: (b)
Using the correct symbols,
we have: Given expression
= 16 + 4 x 5 - 72 ÷ 8
= 16+ 20 - 9
= 36 –9 = 27.
Answer: Option C. -> 48
Answer: (c)
Using the correct symbols,
we have: Given expression
= 15 x 3- 10 ÷ 5 + 5 (using VBODMAS rule)
= 45 - 2 + 5
= 50 - 2 = 48.
Answer: (c)
Using the correct symbols,
we have: Given expression
= 15 x 3- 10 ÷ 5 + 5 (using VBODMAS rule)
= 45 - 2 + 5
= 50 - 2 = 48.
Answer: Option C. -> 18 C 3 G 6 B 8 B 4 D 12
Answer: (c)
Using the proper notations in (c),
we get the statement as:
18 ÷ 3 - 6 + 8 + 4 = 12
or 6 - 6 + 8 + 4 = 12
or 12 = 12,
which is true.
Answer: (c)
Using the proper notations in (c),
we get the statement as:
18 ÷ 3 - 6 + 8 + 4 = 12
or 6 - 6 + 8 + 4 = 12
or 12 = 12,
which is true.