Find the sum of first 9 numbers, which are multiple of 2 and 7 both
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The A.P is 14 , 28 , 42.............126
Sum of A.P n/2 (a+l)
here n =9
a =14
l=126
sum= 9/2 (14 +126)
=630
HOPE THIS HELPS
Sum of A.P n/2 (a+l)
here n =9
a =14
l=126
sum= 9/2 (14 +126)
=630
HOPE THIS HELPS
malhotraprem75248:
please explain it in another way
ohkay!
the common formula for finiding the sum is n/2 (a+l)..which is helpful to us when we have the first number and last number of a.p. given.
do u need more explanation
ok
no
thank you
then please like :)
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