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Re: 3^10 + 3^10 + 3^10 = [#permalink]
Answer = A = 3^11

\(3^{10} + 3^{10} + 3^{10} = 3 * 3^{10} = 3^{11}\)
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Re: 3^10 + 3^10 + 3^10 = [#permalink]
1. Since 3^10 is common among all the terms, it can be factored out.
2. This factors to 3^10(1+1+1).
3. This reduces to 3^10 * (3), which is also 3^10 * 3^1.
4. You can then add the exponents: 3^10 * 3^1 = 3^10+1 = 3^11.

The answer is A.
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Re: 3^10 + 3^10 + 3^10 = [#permalink]
3^10 + 3^10 + 3^10 = 3^10(1+1+1) =3^10*3 = 3^11
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Re: 3^10 + 3^10 + 3^10 = [#permalink]
Expert Reply
Bunuel wrote:

Tough and Tricky questions: Exponents.



3^10 + 3^10 + 3^10 =

A) 3^11
B) 3^13
C) 3^30
D) 9^10
E) 9^30

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Source: Chili Hot GMAT


The correct answer is A.
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Re: 3^10 + 3^10 + 3^10 = [#permalink]
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Re: 3^10 + 3^10 + 3^10 = [#permalink]
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