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Is the product abcd divisible by 10?

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aadikamagic
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Is the product abcd divisible by 10? [#permalink] New post   03 Oct 2014, 11:32
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40% (00:49) correct 60% (00:44) wrong based on 208 sessions
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Is the product abcd divisible by 10?

(1) a is a multiple of 5
(2) b is a multiple of 2
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E
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Bunuel
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Re: Is the product abcd divisible by 10? [#permalink] New post   03 Oct 2014, 11:37
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aadikamagic wrote:
Is the product abcd divisible by 10?

(1) a is a multiple of 5
(2) b is a multiple of 2


The answer is E because we don't know whether cd is an integer: if cd is an integer, then abcd is a multiple of 10, but if cd is not an integer, then abcd is not a multiple of 10.

Answer: E.
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Re: Is the product abcd divisible by 10? [#permalink] New post   14 Mar 2016, 00:00
Great Question..
Almost Had me.
Here if A,B,C,D were integers then C was sufficient
but we have no clue of C,D
hence E
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SW4
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Is the product abcd divisible by 10? [#permalink] New post   29 Oct 2016, 14:06
Is the product abcd divisible by 10?

1. a is a multiple of 5
2. b is a multiple of 2
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Re: Is the product abcd divisible by 10? [#permalink] New post   29 Oct 2016, 14:10
A = 5m
B= 2n
C could be 1/2 and d could be 1/5

We end up with abcd= mn.. Insuff

E


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Re: Is the product abcd divisible by 10? [#permalink] New post   29 Oct 2016, 14:22
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SW4 wrote:
Is the product abcd divisible by 10?

1. a is a multiple of 5
2. b is a multiple of 2


Merging topics. Please search before posting. Thank you.
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Re: Is the product abcd divisible by 10? [#permalink] New post   29 Oct 2016, 15:02
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aadikamagic wrote:
Is the product abcd divisible by 10?

(1) a is a multiple of 5
(2) b is a multiple of 2


Target question: Is the product abcd divisible by 10?

Jump straight too.....
Statements 1 and 2 combined
There are several values that satisfy BOTH statements. Here are two:
Case a: a = 5, b = 2, c = 1 and d = 1. Here, abcd = 10. So, in this case, the product abcd IS divisible by 10
Case b: a = 5, b = 2, c = 0.3 and d = 1. Here, abcd = 3. So, in this case, the product abcd NOT divisible by 10
Since we cannot answer the target question with certainty, the COMBINED statements are NOT SUFFICIENT

Answer:
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E


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tonyglezz27
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Re: Is the product abcd divisible by 10? [#permalink] New post   01 Feb 2021, 05:35
zero can be a multiple of 2 and 5 as well
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Re: Is the product abcd divisible by 10? [#permalink] New post   05 Apr 2022, 05:00
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Re: Is the product abcd divisible by 10? [#permalink]
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