RRB NTPC Mathematical Operations Questions with Answers: The Railway Recruitment Board (RRB) NTPC exam is a competitive test for recruiting candidates in non-technical posts in Indian Railways. The exam includes a Mathematics section, which tests quantitative aptitude and problem-solving skills.
One important topic in this section is Mathematical Operations. These questions check how well you can apply mathematical rules and operations to solve problems quickly.
Below is an introduction to Mathematical Operations questions with examples and answers to help you prepare for the RRB NTPC CBT (Computer-Based Test).
RRB NTPC Mathematical Operations Questions
Here are the MCQs:
Q.1.
24 * 12 * 35 * 24 * 6 * 319
(a) x, ÷, +, -, =
(b) ÷, +, -, x, =
(c) +, -, ÷, x, =
(d) x, +, -, ÷, =
Q.2.
Which two numbers should be interchanged to make the given equation correct?
36 x 12 + 48 ÷ 6 – 18 = 202
(a) 36 and 18
(b) 36 and 48
(c) 6 and 12
(d) 6 and 18
Q.3.
15 * 5 * 24 * 140 * 7 * 71
(a) x, -, ÷, +, =
(b) x, -, +,÷, =
(c) ÷, +, -, x, =
(d) x, ÷, +, -, =
Q.4.
Which two numbers should be interchanged to make the given equation correct?
63 ÷ 21 – 42 + 8 x 7 = 135
(a) 7 and 63
(b) 21 and 8
(c) 7 and 21
(d) 21 and 42
Q.5.
72 * 12 * 8 * 6 * 22 = 32
(a) x, +, -, ÷
(b) ÷, -, x, +
(c) ÷, +, x, –
(d) +, ÷, x, –
Q.6.
Which two numbers and two signs can be interchanged so as to balance the given equation?
16 x 4 + 12 ÷ 4 – 15 = 59
(a) 16 and 12; + and –
(b) 15 and 16; x and +
(c) 4 and 12; x and ÷
(d) 12 and 15; ÷ and –
Q.7.
In the following equation, ‘+’ is interchanged with ‘6’ and ‘7’, then which equation will be correct?
(a) 78 – 68 + 66 = 59
(b) 62 – 67 + 76 = 83
(c) 76 – 75 + 77 = 56
(d) 67 – 76 + 43 = 100
Q.8.
Which two numbers should be interchanged to make the given equation correct?
9 + 7 x 5 – 18 ÷ 2 = 3 x 4 – 10 + 45 ÷ 5
(a) 2 and 5
(b) 9 and 3
(c) 7 and 4
(d) 18 and 45
Q.9.
Which two signs and two numbers should be interchanged to make the given equation correct?
17 + 11 – 12 x 36 ÷ 6 = 80
(a) x and -, 6 and 12
(b) x and -, 17 and 11
(c) x and -, 17 and 12
(d) + and -, 6 and 12
Q.10.
Which two signs should be interchanged to make the given equation correct?
121 + 11 – 42 x 6 ÷ 7 = 83
(a) – and ÷
(b) + and ÷
(c) ÷ and x
(d) x and –
Q.11.
I have two 5-paise, three 10-paise, and five 25-paise stamps. To pay a postage of 1 rupee 45 Paise, what is the minimum number of stamps required?
(a) Six
(b) Seven
(c) Eight
(d) Nine
Q.12.
How many different arrangements can be made with the letters a, a, b, b in a row?
(a) 24
(b) 12
(c) 6
(d) 3
Q.13.
If 6 × 6 = 33, 7 × 2 = 36, and 4 × 8 = 24, then what is 8 × 4?
(a) 24
(b) 48
(c) 84
(d) 42
Q.14.
If 324 × 150 = 54, 251 × 402 = 48, and 523 × 246 = 120, then what is 651 × 345?
(a) 122
(b) 144
(c) 152
(d) 178
Q.15.
If ‘÷’ means ‘division’, ‘–’ means ‘addition’, ‘×’ means ‘subtraction’, and ‘+’ means ‘multiplication’, then what is the value of 8 + 4 ÷ 6 + 3 × 4?
(a) 4
(b) 8
(c) 16
(d) 12
RRB NTPC Mathematical Operations Answers
Here are the answers:
- d
- c
- b
- c
- c
- a
- d
- c
- a
- c
- b
- c
- d
- b
- c