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

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(3*10^20)*(8*10^30) [#permalink]  21 Nov 2018, 08:29
Expert's post
00:00

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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GRE Instructor
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Kudos [?]: 1681 [1] , given: 8

Re: (3*10^20)*(8*10^30) [#permalink]  22 Nov 2018, 08:03
1
KUDOS
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. $$2.4*10^{301}$$

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

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

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

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

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

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