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# 2ab5 is a four-digit number divisible by 25. If the number f

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2ab5 is a four-digit number divisible by 25. If the number f [#permalink]  14 Apr 2018, 02:40
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84% (01:10) correct 15% (01:02) wrong based on 26 sessions
2ab5 is a four-digit number divisible by 25. If the number formed from the two digits ab is a multiple of 13, then ab =

(A) 10
(B) 25
(C) 52
(D) 65
(E) 75
[Reveal] Spoiler: OA

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Re: 2ab5 is a four-digit number divisible by 25. If the number f [#permalink]  20 Apr 2018, 03:46
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Since it is given that ab is divisible by $$13$$ we should first check ans choices to eliminate options that are not divisible by $$13$$:

option a: $$10$$ is below $$13$$so it is not divisible by $$13$$
option b: $$25$$ is one less than $$26$$ so it is also not divisible by $$13$$
option c: $$52$$ is divisible by $$13$$ so let us see if the total number replaced by $$52$$ for the position ab is divisible by $$25$$
$$\frac{2525}{25}= 101$$
option C
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Re: 2ab5 is a four-digit number divisible by 25. If the number f [#permalink]  17 Jul 2018, 12:26
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Carcass wrote:
2ab5 is a four-digit number divisible by 25. If the number formed from the two digits ab is a multiple of 13, then ab =

(A) 10
(B) 25
(C) 52
(D) 65
(E) 75

Note :

ab is a multiple of 13. So, we can eliminate Option A, B, and E.

Option C:

2525 / 25.........clearly divisible. So, ab must be 52.

The best answer is C.
Re: 2ab5 is a four-digit number divisible by 25. If the number f   [#permalink] 17 Jul 2018, 12:26
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# 2ab5 is a four-digit number divisible by 25. If the number f

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