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Practice - Indices and Roots - 10
Hello, ambitious mathematicians! Are you ready to unravel the mysteries of indices and roots? This 10-question quiz is all set to challenge your knowledge and understanding. Remember, keep calm and stay logical – the world of numbers is an exciting place to explore. You've got this!
1.
What is 40?
4
0
1
None of the above
Any number raised to the power of zero equals 1.
2.
What is the value of 8-1?
-8
1⁄8
0
None of the above
-1 power of a number represents its reciprocal, for 8 it is 1⁄8.
3.
If a2 = 25, what is 'a'?
5 or -5
10
25
20
The square root of 25 can be 5 or -5, as (-5) x (-5) = 25.
4.
What is √ 25 x 5?
5
25
10
20
The square root of 25 is 5. so, 5 x 5 = 25.
5.
If 52 = x, What is the square root of x?
5
10
25
20
Here, x equals 25, and the square root of 25 is 5.
6.
What is √ 16 ?
4 or -4
16
32
8
The square root of 16 can be 4 or -4, as (-4) x (-4) = 16.
7.
What is 5-1?
-5
1⁄5
0
None of the above
-1 power of a number represents its reciprocal, for 5 it is 1⁄5.
8.
What is the value of 8 to the power 1⁄3?
2
4
3
5
8 to the power 1⁄3 represents the cube root of 8, which is 2.
9.
What is the value of 1000.5?
5
10
50
25
100 to the power 1⁄2 represents the square root of 100, which is 10.
10.
What is 53?
15
125
20
30
53 means 5 x 5 x 5, which equals 125.
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