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Three coins are on a table, tails side up. Janssen pick one at random,

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Intern
Intern
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Joined: 09 Apr 2017
Posts: 24
Location: Nepal
Concentration: Finance, Entrepreneurship
WE: Information Technology (Computer Software)
CAT Tests
Three coins are on a table, tails side up. Janssen pick one at random,  [#permalink]

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New post 04 Sep 2018, 03:46
3
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (01:48) wrong based on 15 sessions

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Three coins are on a table, tails side up. Janssen pick one at random, with equal probability for each, and turns it over. On average, how many times would have to do this in order to get all three coins heads side up?
a. 7
b. 8
c. 9.
d. 10
e. 11
Senior Manager
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Joined: 15 Oct 2017
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Re: Three coins are on a table, tails side up. Janssen pick one at random,  [#permalink]

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New post 04 Sep 2018, 09:35
Can you please share the OE?
Re: Three coins are on a table, tails side up. Janssen pick one at random, &nbs [#permalink] 04 Sep 2018, 09:35
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Three coins are on a table, tails side up. Janssen pick one at random,

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