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(3*10^20)*(8*10^30)

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(3*10^20)*(8*10^30) [#permalink] New post 21 Nov 2018, 08:29
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Question Stats:

77% (01:04) correct 22% (00:24) wrong based on 9 sessions
\((3*10^{20})*(8*10^{30})\)

A. \(2.4*10^{50}\)

B. \(2.4*10^{51}\)

C. \(2.4*10^{60}\)

D. \(2.4*10^{61}\)

E. \(2.4*10^{301}\)
[Reveal] Spoiler: OA

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Re: (3*10^20)*(8*10^30) [#permalink] New post 22 Nov 2018, 08:03
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Expert's post
Carcass wrote:
\((3*10^{20})*(8*10^{30})\)

A. \(2.4*10^{50}\)

B. \(2.4*10^{51}\)

C. \(2.4*10^{60}\)

D. \(2.4*10^{61}\)

E. \(2.4*10^{301}\)


\((3*10^{20})*(8*10^{30})=(3)(10^{20})(8)(10^{30})\)

\(=(3)(8)(10^{20})(10^{30})\)

\(=(24)(10^{50})\)

\(=(2.4)(10^1)(10^{50})\)

\(=(2.4)(10^{51})\)

Answer: B

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Re: (3*10^20)*(8*10^30) [#permalink] New post 27 Nov 2018, 06:55
good example
Re: (3*10^20)*(8*10^30)   [#permalink] 27 Nov 2018, 06:55
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