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Base system

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Intern
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Joined: 04 Aug 2018
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Base system  [#permalink]

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New post Updated on: 04 Aug 2018, 22:17
1
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A
B
C
D
E

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The product of 2 nos “231” and “ABA” is “BA4AA” in a certain base system where base is less than 10 and A and B are distinct digits. What Is the base of that system?
A. 5
B.6
C. 7
D. 8

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Originally posted by Anushka1234 on 04 Aug 2018, 20:44.
Last edited by Anushka1234 on 04 Aug 2018, 22:17, edited 1 time in total.
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Re: Base system  [#permalink]

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New post 04 Aug 2018, 21:13
B.6

1,2,3,4,A,B are 6 distinct digits. So, base cannot be less than 6.

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Re: Base system &nbs [#permalink] 04 Aug 2018, 21:13
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