can 3*n end with 1 for any value ofn

Asked by mamathakaja | 26th Aug, 2008, 05:43: PM

Expert Answer:

Yes, 3 x 7 = 21. This end with1. In the same way 3 x 17 = 51.Thus all numbers with 7 at one's place when multiplied by 3 always give number ending with 1.

Answered by  | 26th Aug, 2008, 06:06: PM

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