(√5)⁴ = ?
(√5)² = 5
(√5)⁴ = 5² = 25
Answer: 25
Square Roots & Cube Roots · Exercise 4 of 6
65 mixed-level square root and cube root questions in the style of IBPS/SBI ("√? = …"), SSC CGL/CHSL, RRB NTPC and Group D, UPSC CSAT, state exams and campus placements. Use them as a timed speed drill.
(√5)⁴ = ?
(√5)² = 5
(√5)⁴ = 5² = 25
Answer: 25
If 2√x = 18, what is x?
√x = 18 ÷ 2 = 9
x = 9² = 81
Answer: 81
If √(x + 16) − √x = 2, find x.
√(x + 16) = 2 + √x
Square: x + 16 = 4 + 4√x + x
12 = 4√x → √x = 3
x = 9
Check: √25 − √9 = 5 − 3 = 2 ✔
Answer: 9
Find ∛512 × √0.01.
∛512 = 8
√0.01 = 0.1
8 × 0.1 = 0.8
Answer: 0.8
Which is the largest: √0.0121, 0.1, √0.01 or 0.12?
√0.0121 = 0.11
√0.01 = 0.1
Compare 0.11, 0.1, 0.1 and 0.12
Largest = 0.12
Answer: 0.12
Timed online tests with instant scores and explanations.