1.

Find the sum of a] first 10 multiples of 8 b] first 25 multiples of 3 c] first 100 multiples of 2.

Answer»


Answer :a] `=5 [16+ 72] = 5 xx 88 = 440`.
b] `= (25)/(2) [ 6 + 72] = (25)/(2) xx 78 = 975`.
C] `= 50[ 4+198] = 50 xx 202 = 10100.`


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