IBPS PO General Awareness: Simplification and Approximation questions with solutions

Q1. What will come in place of the question mark '?' in the following equation? \[(14)^2 + 179 + (5)^2 = (?)^2\]

1. 20
2. 10
3. 30
4. 40

Answer: 20

Compute the expression: \(14^2 = 196\), \(5^2 = 25\), so the sum is \(196 + 179 + 25 = 400\). Since \((?)^2 = 400\), the value of ? is 20.

Q2. 40.4 × 5 - 3240 ÷ 8 + 252 - 30 = ? What will come in place of the question mark?

1. 392
2. 387
3. 282
4. 399

Answer: 392

Using BODMAS, 40.4 × 5 = 202 and 3240 ÷ 8 = 405. Then 202 - 405 + 252 - 30 = 392.

Q3. What will come in place of the question mark (?) in the following question? $(16)^2 = ?

1. 4
2. 256
3. 38
4. 32

Answer: 256

The expression is $(16)^2$, which means 16 squared. Since 16 × 16 = 256, the correct answer is 256.

Q4. ? = 60% of 600 / 720

1. 40
2. 20
3. 36
4. 0.5

Answer: 0.5

60% of 600 is 360. Then 360 ÷ 720 = 0.5, so the answer is 0.5.