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# Tricky Exponents Question

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Manager
Joined: 03 Jul 2005
Posts: 194
Location: City
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Kudos [?]: 5 [0], given: 0

Tricky Exponents Question [#permalink]  27 Jun 2006, 02:21
Actual GMAT question

(1/2)^-3 * (1/4)^-2 * (1/16)^-1

A) 1/2^-18
B) 1/2^-11
C) 1/2^-6
D) 1/8^-11
E) 1/8^-6
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Manager
Joined: 03 Jul 2005
Posts: 194
Location: City
Followers: 1

Kudos [?]: 5 [0], given: 0

How did you work it out?

SVP
Joined: 30 Mar 2006
Posts: 1737
Followers: 1

Kudos [?]: 46 [0], given: 0

B

(1/2)^-3 * (1/4)^-2 * (1/16)^-1

= 2^3 * 4^2 * 16
= 2^3 * 2^4 * 2^4
= 2^ 11
= (1/2)^-11
Manager
Joined: 03 Jul 2005
Posts: 194
Location: City
Followers: 1

Kudos [?]: 5 [0], given: 0

great thanks, I knew it was that easy!
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