-√8 + √128 - √32 is equal to Option 1: -2√2 Option 2: 2√2 Option 3: -3√2 Option 4: 3√2

Answer: 2√2. Solution: √8 = 2√2, √128 = 8√2, √32 = 4√2. So -2√2 + 8√2 - 4√2 = 2√2.

Quantitative Reasoning

Number System

Easy

$-\sqrt{8} + \sqrt{128} - \sqrt{32}$ is equal to

$-2\sqrt{2}$

$2\sqrt{2}$

$-3\sqrt{2}$

$3\sqrt{2}$

✅ Correct Option: 2

$\sqrt{8} = 2\sqrt{2}$ , $\sqrt{128} = 8\sqrt{2}$ , $\sqrt{32} = 4\sqrt{2}$ . So $-2\sqrt{2} + 8\sqrt{2} - 4\sqrt{2} = 2\sqrt{2}$ .

2022: 8 Aug Shift 1

Distance of A to B is

2026: 31 May Shift 1

Match the LIST-I with LIST-II

LIST-I (Number)	LIST-II (Unit digit of the number)
A. $4^{425}$	I. 6
B. $4^{1024}$	II. 4
C. $133^{63} \times 4^{49}$	III. 3
D. $3^{81}$	IV. 8

Choose the correct answer from the options given below:

2025: 2 June Shift 2

How many numbers between -13 and 13 are multiples of 3 or 5?

2022: 20 Aug Shift 1

Consider the series:

2, 3, 5, 7, 11, 13, 17, 19, 21, 23, 29

Find the number which is different from other similar numbers.

2023: 5 June Shift 2

Find the length of the longest rod which can be used to measure exactly the lengths 5 m 13 cm, 11 m 34 cm and 12 m 15 cm.

2025: 19 May Shift 2

If function (x + 296 × 298) is a perfect square, then the value of x is: