I have a new trick.
How we find sum of a number series like.
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = ?
So, First take next digit of last number that is 11.
and then take mid digit of series that is 5.
11 * 5 == 55
this is the also the sum of=
1 + 2 + 3 + 4 + 5+ 6 + 7 + 8 + 9 + 10 = 55.....!!
How we find sum of a number series like.
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = ?
So, First take next digit of last number that is 11.
and then take mid digit of series that is 5.
11 * 5 == 55
this is the also the sum of=
1 + 2 + 3 + 4 + 5+ 6 + 7 + 8 + 9 + 10 = 55.....!!
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