Mathematical Reasoning Questions with Answers for Competitive Exams
Which two numbers from amongst the given options should be interchanged to make the given equation correct?
248 ÷ 4 + 184 ÷ ( 4 × 6 – 2 × 8) = 77
(A) 8 and 4
(B) 184 and 77
(C) 184 and 248
(D) 4 and 6
Correct Answer : C
By interchanging the given two signs and numbers which of the following equation will be not correct?
× and ÷, 2 and 6
I. 7 – 4 × 3 ÷ 6 + 2 = 8
II. 6 – 8 × 2 + 9 ÷ 3 = 5
(A) Only II
(B) Neither I nor II
(C) Only I
(D) Both I and II
Correct Answer : D
After interchanging the given two numbers and two signs what will be the values of equation (I) and (II) respectively?
– and ×, 6 and 4
I. 7 × 6 + 8 ÷ 2 – 4
II. 4 – 7 × 6 + 8 ÷ 2
(A) 27, 42
(B) 27, 47
(C) 27, 49
(D) 25, 40
Correct Answer : A
By interchanging the given two signs and numbers which of the following equation will be not correct?
÷ and ×, 1 and 3
(A) 6 ÷ 3 – 1 + 4 × 2 = 5
(B) 4 × 3 – 1 + 8 ÷ 2 = 9
(C) 5 – 8 × 3 + 9 ÷ 1 = 24
(D) 6 + 4 – 9 × 3 ÷ 1 = –17
Correct Answer : B
Which of the following interchange of numbers and signs would make the given equation correct?
10 − 4 ÷ 20 + 16 × 8 = 16
(A) 10 and 16, × and ÷
(B) 4 and 8, × and−
(C) 4 and 20, + and ÷
(D) 10 and 20, + and ×
Correct Answer : B
Which two signs and two numbers should be interchanged in the following equation to make it correct?
14 × 6 ÷ 12 + 15 − 9 = 203
(A) 15 , 6 , + , ÷
(B) 12 , 15 , − , ×
(C) 12 , 9 , ÷ , −
(D) 14 , 6 , ÷ , ×
Correct Answer : A
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
23 * 2 * 2 * 5 * 18
(A) −, ÷, ×, =
(B) −, ÷, +, =
(C) −, ÷, =, +
(D) −, ×, ÷, =
Correct Answer : A
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
20 * 2 * 50 * 5 * 115
(A) −, ×, =, +
(B) +, ×, =, −
(C) +, ×, −, =
(D) −, ×, +, =
Correct Answer : C
If ÷ means −, − means ×, × means +, + means ÷, what will come in place of the question mark (?)?
77 ÷ 7 × 17 – 49 + 7 = ?
(A) 189
(B) 119
(C) 145
(D) 169
Correct Answer : A
Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
268 * 4 * 8 * 5 * 14 = 41
(A) + × − ÷
(B) × ÷ + −
(C) ÷ × + −
(D) ÷ − × +
Correct Answer : D