Asked by RAMADAN MAHBUB MOHAMMED

Using Mathematical Induction, prove the following:
a) 2+4+6+.....+2n= n(n+1)
Answered by oobleck
surely you have seen how to show that
1+2+3+...+n = n(n+1)/2
your sum is just twice that.
Answered by bkle
pls help
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