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Math Expert V
Joined: 02 Sep 2009
Posts: 60539
How many different numbers k are there such that the sum of k and 3 of  [#permalink]

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Difficulty:   25% (medium)

Question Stats: 89% (01:50) correct 11% (01:59) wrong based on 35 sessions

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{5, 8, 3, 7}

How many different numbers k are there such that the sum of k and 3 of the 4 numbers shown equals 24?

A. 4

B. 5

C. 6

D. 8

E. Infinitely many

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Math Expert V
Joined: 02 Aug 2009
Posts: 8341
Re: How many different numbers k are there such that the sum of k and 3 of  [#permalink]

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Bunuel wrote:
{5, 8, 3, 7}

How many different numbers k are there such that the sum of k and 3 of the 4 numbers shown equals 24?

A. 4

B. 5

C. 6

D. 8

E. Infinitely many

For any of the set of THREE, there will be a k, and as all 4 numbers are different, k will be different.

So values of k is the selection of 3 from 4 numbers....=4C3=4

A
_________________ Re: How many different numbers k are there such that the sum of k and 3 of   [#permalink] 09 Dec 2019, 19:50
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# How many different numbers k are there such that the sum of k and 3 of  