Mathematics Multiple Choice Questions & Answers on “Cube Roots”.
1. Which symbol represents cube root of x?
a) x2
b) x3
c) ∛x
d) √x
Answer: c
Clarification: ∛x represents cube root of x. √x represents square root of x. x2 represents square of x. x3 represents cube of x.
2. Find the cube root of 226981?
a) 226981
b) 156981
c) 289981
d) 189981
Answer: a
Clarification: Factorizing 226981 we get:
226981 = 61×61×61
Cube root of 226981 is 61.
3. What is the cube root of 343?
a) 4
b) 5
c) 6
d) 7
Answer: d
Clarification: Factorizing 343 we get:
343 = 7×7×7
Cube root of 343 is 7.
4. What is the cube root of 1331?
a) 10
b) 11
c) 12
d) 13
Answer: b
Clarification: Factorizing 1331 we get:
1331 = 11×11×11
Cube root of 1331 is 11.
5. What is (sqrt[3]{389017})?
a) 73
b) 75
c) 77
d) 79
Answer: a
Clarification: Factorizing 389017 we get:
389017 = 73×73×73
Cube root of 389017 is 73.
6. What is the cube root of 125?
a) 4
b) 5
c) 6
d) 7
Answer: b
Clarification: Factorizing 125 we get:
125 = 5×5×5
Cube root of 125 is 5.
7. What is square and cube of 14?
a) 2744, 196
b) 196, 2744
c) 196, 2748
d) 2744, 195
Answer: b
Clarification: Square of 14 is 14×14 which gives us 196.
Cube of 14 is 14×14×14 which gives us 2744.
8. Evaluate (sqrt[3]{614125}).
a) 45
b) 55
c) 65
d) 85
Answer: d
Clarification: Factorizing 614125 we get:
614125 = 5×5×5×17×17×17
Cube root of 614125 is 85.
9. What is the cube root of 729000?
a) 40
b) 50
c) 90
d) 70
Answer: c
Clarification: Factorizing 729000 we get:
729000 = 9×9×9×10×10×10
Cube root of 729000 is 90.
10. What is the cube root of 50653?
a) 34
b) 35
c) 36
d) 37
Answer: d
Clarification: Factorizing 50653 we get:
50653 = 37×37×37
Cube root of 50653 is 37.