50+ Repeated Simplification Question for RRB PO 2025 Exam, Download Free PDF

Simplification for RRB PO 2025 Exam: Simplification is an important part of the RRB PO  Quantitative Aptitude section in the RRB PO 2025 Exam. It contains 5–15 questions in the prelims and mains. These questions test your numerical ability, calculation speed, and accuracy under time pressure, making them a high-scoring opportunity if approached strategically. In this article, we are providing the 50+ most repeated simplification questions for the RRB PO 2025 Exam. Candidates can check the detailed answer in the article below.

Why Simplification Matters for RRB PO 2025 Exam

Simplification questions are designed to evaluate your ability to handle basic arithmetic operations, fractions, decimals, percentages, and the application of the BODMAS rule. The Simplification question is easy, straightforward, but can be time-consuming. If you are a master in this section, you can boost your section-wise preparation. Scoring well in simplification can save time for more complex questions, boosting your overall performance. Typically, you can expect:

• 5–10 questions in the RRB PO Prelims.
• 10–15 marks contribution in the Quantitative Aptitude section.

Last-Minute Power Dose for Your RRB Officer Success

Important Question Simplification For IBPS RRB 2024 Exam

Question 1: What will come in the place of question mark (?) in the given expression?

[{(4608 ÷ 24) ÷ 12} ÷ 4] + 11² + √169 = ?

A) 133

B) 138

C) 143

D) 148

E) None of these

Ans: 2

Solution:

[{(4608 ÷ 24) ÷ 12} ÷ 4] + 11² + √169 = ?

? = [{192 ÷ 12} ÷ 4] + 121+ 13

? = [16 ÷ 4] + 134

? = 4 + 134

? = 138

Hence, option b.

Question 2: What will come in the place of question mark (?) in the given expression?

125 + ? + 272 – 391 = 184 – 215 + 169

A) 124

B) 128

C) 132

D) 136

E) None of these

Ans: 3

Solution:

125 + ? + 272 – 391 = 184 – 215 + 169

? + 397 – 391 = 353 – 215

? + 6= 138

?= 138 – 6

? = 132

Hence, option c.

Question 3: What will come in the place of question mark (?) in the given expression?

256⁴ ÷ 64⁶ × 16² = 4^?

A) 4

B) 8

C) 2

D) 6

E) None of these

Ans: 3

Solution:

256⁴ ÷ 64⁶ × 16² = 4^?

4^? = (4⁴)⁴ ÷ (4³)⁶ × (4²)²

4^? = 4¹⁶ ÷ 4¹⁸ × 4⁴

4^? = 4^16-18+4

4^? = 4²

? = 2

Hence, option c.

Question 4: What will come in the place of question mark (?) in the given expression?

√225 + √729 – √324 = 20% of ?

A) 120

B) 124

C) 128

D) 132

E) None of these

Ans: 1

Solution:

√225 + √729 – √324 = 20% of ?

0.2 × ? = 15 + 27 – 18

0.2 × ? = 24

? = 24/0.2

? = 120

Hence, option a.

Question 5: What will come in the place of question mark (?) in the given expression?

30% of 150 = 15% of ? + 20% of 180

A) 45

B) 60

C) 75

D) 90

E) 105

Ans: 2

Solution:

30% of 150 = 15% of ? + 20% of 180

0.15 × ? + 0.20 × 180 = 0.30 × 150

0.15 × ? + 36 = 45

0.15 × ? = 9

? = 9/0.15

? = 60

Hence, option b.

Question 6: What will come in the place of question mark (?) in the given expression?

√2116 × 4 + ?³ = 696

A) 8

B) 9

C) 7

D) 6

E) None of these

Ans: 1

Solution:

√2116 × 4 + ?³ = 696

46 × 4 + ?³ = 696

184 + ?³ = 696

?³ = 512

? = 8

Hence, option a.

Question 7: What will come in the place of question mark (?) in the given expression?

12.5% of 4960 + ?% of 2400 = 1580

A) 25

B) 40

C) 50

D) 45

E) None of these

Ans: 2

Solution:

12.5% of 4960 + ?% of 2400 = 1580

620 + ? × 24 = 1580

? × 24 = 960

? = 960/24 = 40

Hence, option b.

Question 8: What will come in the place of question mark (?) in the given expression?

4225% of 40 + 1226 = ?²

A) 56

B) 60

C) 62

D) 58

E) None of these

Ans: 5

Solution:

4225% of 40 + 1226 = ?²

0.4 × 4225 + 1226 = ?²

1690 + 1226 = ?²

?²= 2916

? = 54

Hence, option e.

Question 9: What will come in the place of question mark (?) in the given expression?

?% of 600 – 120 = 8² + 4²

A) 40

B) 100/3

C) 50

D) 200/3

E) 25

Ans: 2

Solution:

?% of 600 – 120 = 8² + 4²

? × 6 – 120 = 64 + 16

? × 6 = 200

? = 200/6 = 100/3

Hence, option b.

Question 10: What will come in the place of question mark (?) in the given expression?

{(452 – 214 + 72) / 5} × 2 = ?

A) 154

B) 142

C) 124

D) 136

E) None of these

Ans: 3

Solution:

{(452 – 214 + 72) / 5} × 2 = ?

? = (310 / 5) × 2

? = 62 × 2

? = 124

Hence, option c.

Basic Rules to Solve Simplification Questions

To increase your question-solving speed in simplification, follow these basic rules and strategies:

Master the BODMAS rule

BODMAS stands for Brackets, Order (Power, Square Root), Division, Multiplication, Addition, Subtraction. 

Perform step-by-step simplification

Break complex expressions into smaller parts. Solve brackets first, then exponents, followed by division/multiplication, and finally addition/subtraction.

Practice common question types

Simplification questions generally fall into two categories:

• Finding the missing number: Solve for a variable in the equation, for example, 540 −? + 75 = 6 × 50 + 315.
• Solving direct equations: Simplify a given expression to its simplest form, for example, 689 × 6156 ÷ 18% of 684 =?

Practice daily

Solve 10-20 questions daily to get familiar with the pattern and improve mental math skills. Use mock tests to simulate exam conditions.

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