without adding ,find the sum 1+3+5+7+9+11+13+15+17+19+21++23+25+27++29
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Hi there
Your answer is :-
Sn = Sum of all number
n = Number of terms
a = First number
an = last number
sn = n/2 ( a + an )
sn = 15 /2 ( 1 + 29 )
sn = 15/2 × 30
sn = 15 × 15
sn = 225 ( ans )
Thank You
Your answer is :-
Sn = Sum of all number
n = Number of terms
a = First number
an = last number
sn = n/2 ( a + an )
sn = 15 /2 ( 1 + 29 )
sn = 15/2 × 30
sn = 15 × 15
sn = 225 ( ans )
Thank You
gospel:
thnx
ok yeah
thnx
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