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How many 2-digit positive integers are there such that the p

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How many 2-digit positive integers are there such that the p [#permalink] New post 06 Nov 2018, 16:11
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How many 2-digit positive integers are there such that the product of their two digits is 24 ?

A. One

B. Two

C. Four

D. Six

E. Eight
[Reveal] Spoiler: OA

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Re: How many 2-digit positive integers are there such that the p [#permalink] New post 08 Nov 2018, 03:29
Carcass wrote:
How many 2-digit positive integers are there such that the product of their two digits is 24 ?

A. One

B. Two

C. Four

D. Six

E. Eight


Explanation::

Factorize 24 = 2^3 * 3

i.e 24 = 4 * 6 and 3 * 8 , similarly 6 * 4 and 8 * 3

Therefore total 2 digit numbers are = 46, 64 , 38 and 83
i.e. 4 two digit positive integers
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Re: How many 2-digit positive integers are there such that the p   [#permalink] 08 Nov 2018, 03:29
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