Mathematical Operations(Reasoning Aptitude ) Questions and answers for exam Preparation

Reasoning Aptitude

MATHEMATICAL OPERATIONS MCQs

Total Questions : 233 | Page 4 of 24 pages

Question 31. A means ‘+', B means '-' C means ‘×' and D means ÷, then 18 C 14 A 6 B 16 D 4 =?

254
238
188
258
None of these

Discuss Question

Answer: Option A. -> 254
Answer: (a)
According to the question,
? = 18 C 14 A 6 B 16 D 4
from the question by changing the symbols, we get
= 18 × 14 + 6 - 16 ÷ 4 (using VBODMAS rule)
= 18 × 14 + 6 - 4
= 252 + 6 - 4
= 258 - 4 = 254

Question 32. If A means ‘-', B means '÷', C means ‘+' and D means '×', then 15 B 3 C 24 A 12 D 2 = ?

3
5
7
9
None of these

Discuss Question

Answer: Option B. -> 5
Answer: (b)
According to the question,
? = 15 B 3 C 24 A 12 D 2
from the question by changing the symbols, we get
= 15 ÷ 3 +24 - 12 × 2 (using VBODMAS rule)
= 5 + 24 -12 × 2
= 5+ 24 - 24 = 5

Question 33. If A means '×' B means ‘÷' C means '-' and D means ‘+', then 4 D 16 A 5 B 8 C 5 = ?

9
16
13
75
None of these

Discuss Question

Answer: Option A. -> 9
Answer: (a)
According to the question,
? = 4 D 16 A 5 B 8 C 5
from the question by changing the symbols, we get
= 4 + 16 × 5 ÷ 8 - 5 (using VBODMAS rule)
= 4 + 16 × 0.625 - 5
= 4 + 10 - 5
= 14 - 5 = 9

Question 34. If '+' means 'minus', ‘-‘, means 'multiply’, ‘÷’ means ‘plus’ and '×' means 'divide', then 10 × 5 ÷ 3 - 2 + 3 = ?

5
$53/3$
21
36

Discuss Question

Answer: Option A. -> 5
Answer: (a)
According to the question,
? = 10 × 5 ÷ 3 -2 + 3
from the question by changing the symbols, we get
= 10 ÷ 5 + 3 × 2 - 3 (using VBODMAS rule)
= 2 + 3 × 2 - 3
= 2 + 6 - 3
= 8 - 3 = 5

Question 35. If '+’ means subtraction, ‘÷’ means addition, ‘-‘ means multiplication and '×' means division, then which of the following equation is correct?

8 ÷ 44 – 5 + 25 = 203
9 ÷ 64 - 2 × 6 = 54
56 + 12 × 34 – 12 = 102
112 × 44 – 12 + 10 = 46

Discuss Question

Answer: Option A. -> 8 ÷ 44 – 5 + 25 = 203
Answer: (a)
8 ÷ 44 - 5 + 25 = 203
from the question by changing the symbols, we get
⇒ 8 + 44 × 5 - 25 = 203 (using VBODMAS rule)
⇒ 8 + 220 - 25 = 203
⇒ 228 - 25 = 203
⇒ 203 = 203
⇒ LHS = RHS.
Therefore the option (a) is correct.

Question 36. If ‘T' means (×), 'U' means (-), 'X' means (÷) and W means (+), then what will be the value of the following expression. (50 X 2) W (28 T 4)

Discuss Question

Answer: Option C. -> 137
Answer: (c)
Given expression, (50 × 2) W (28 T 4)
After interchanging the letters with symbols, we get
(50 ÷ 2) + (28 × 4) = 25 + 112 (using VBODMAS rule)
= 137

Question 37. If A = '+', B = ‘-‘, C = '×' and D = '÷', then which of the following equations is correct?

8 B 6 D A 4 C 3 = 15
9 C 9 B 9 D A 9 = 17
3 A 3 B 3 C 3 A 3 D 3 = 41
8 A 8 B 8 C 8 = - 48

Discuss Question

Answer: Option D. -> 8 A 8 B 8 C 8 = - 48
Answer: (d)
From option (d),
8 A 8 B 8 C 8 = - 48
from the question by changing the symbols, we get
⇒ 8 + 8 - 8 × 8 = - 48
⇒ 8 + 8 - 64 = - 48 (using VBODMAS rule)
⇒ 16 - 64 = - 48
⇒ - 48 = - 48.
Therefore LHS = RHS.
So option (d) is correct.

Question 38. If '÷' means addition and '×' means subtraction, then (15 × 9) ÷ (12 × 4) × (4 ÷ 4) is equal to

96
6
$3/128$
$143/8$

Discuss Question

Answer: Option B. -> 6
Answer: (b)
According to the question,
Required answer = (15 × 9) ÷ (12 × 4) × (4 ÷ 4)
from the question by changing the symbols, we get
= (15 - 9) + (12 - 4) - (4 + 4) (using VBODMAS rule)
= 6 + 8 - 8
= 6

Question 39. If > denotes +, < denotes -, + denotes ÷, ^ denotes ×, - denotes =, × denotes > and = denotes <, choose the correct statement of the following.

28 + 4 ^ 2 = 6 ^ 4 + 2
13 > 7 < 6 + 2 = 3 ^ 4
9 > 5 > 4 – 18 + 9 > 16
9 < 3 < 2 > 1 × 8 ^ 2

Discuss Question

Answer: Option C. -> 9 > 5 > 4 – 18 + 9 > 16
Answer: (c)
From option (c),
9 > 5 > 4 - 18 + 9 > 16
By interchanging the signs,
9 + 5 + 4 = 18 ÷ 9 + 16 (using VBODMAS rule)
⇒ 18 = 18
Thus, option (c) is correct.

Question 40. If A means ‘-’, B means '+', C means 'x', and D means '÷', then 32 D 4 B 7 C 2 A 6

Discuss Question

Answer: Option D. -> 16
Answer: (d)
According to the question,
32 D 4 B 7 C 2 A 6
from the question by changing the alphabets, we get
= 32 ÷ 4 + 7 x 2 - 6 (using VBODMAS rule)
= 8 + 7 x 2 - 6
= 8 + 14 - 6
= 22 - 6 = 16