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Mathematics for IGCSE & O level - Indices 2 (Section 4)

1
If (2^x = rac{1}{4}), what is the value of *x*?
Answer
(A)
-2
2
What value of *x* satisfies ( x^{-1} = rac{1}{5} )?
Answer
(A)
5
3
What is the result when simplifying ( a^7 / a^7 )?
Answer
(B)
1
4
Which of the following is/are equivalent to ( 2^{x+y} )? (Select all that apply)
Answer
A
B
5
If ( x^3 = 27 ), what is the value of *x*?
Answer
(A)
3
6
Select the equivalent expressions to ( rac{1}{a^3}). (Select all that apply)
Answer
(A)
(a^{-3})
7
Solve: ( 5^x = 1 ).
Answer
(A)
0
8
What is the value of (2^4)?
Answer
(C)
16
9
Which expression is equivalent to ( sqrt[3]{64} )?
Answer
(A)
4
10
If ( ( rac{2}{5})^x = rac{25}{4} ), what is the value of x?
Answer
(A)
-2