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remainder when xy is divided by 10

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by firdaus117 » Wed Feb 24, 2010 12:58 pm
Dividing by 10 and getting the remainder is same as determining the unit's digit of xy.Now you can do it yourself,can't you?. :)
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by abhi332 » Wed Feb 24, 2010 1:13 pm
Thanks firdaus117,

3 ^ 21 * 6 ^ 55
= ...3 * ...6
= ...8

so when divided by 10 will give 8 as the Ans
What you think, you become.
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