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BECE Mathematics 2015 Paper

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Question : 15

Total: 40

What is the value of x if

10^{x} = 1000?

1
2
3
4

Solution:

Concept:

If two powers have the same base, then their exponents are equal.

Explanation:

Rewrite

1000

as a power of

10

.

1000 = 10 \times 10 \times 10 = 10^{3}

Now the equation becomes:

10^{x} = 10^{3}

Since the bases are the same, compare the exponents.

x = 3

Answer:

x = 3

, so the correct option is C.

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