Question

Without adding find the sum
1) (1+3+5+7+9+11)

Answer 1

hey mate here is your answer

here,

l=11

a=1

n=6

so,

sum of n terms=n/2 (a+l)

sum of five terms=5/2 (1+11)

=5/2 ×12

=30

hope it will help you

mark me brainliest ✌✌✌

Answer 2

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Solution :—
*⃣*⃣*⃣*⃣*⃣

1) (1 + 3 + 5 + 7 + 9 + 11)

= Sum of first 6 odd numbers

= 6²

= 36

*⃣*⃣*⃣*⃣*⃣*⃣*⃣*⃣*⃣*⃣