Question

how can we find sum without adding a number like 1+3+5+7+9+11

Answer 1

$1 + 3 + 5 + 7 + 9 + 11$

$4 + 12 + 20$

$16 + 20$

$= 36$

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Hope it helped uhh ❤

Answer 2

Step-by-step explanation:

U CAN FIND THE SUM BY THE FORMULA OF SUM OF NTH TERM OF AP

I.E

$sn = \frac{n}{2} (2a + (n - 1)d)$

WHERE A IS FIRST TERM

D IS COMMON DIFFERENCE BETWEEN TERMS

N IS NO. OF TERMS