Question

find the some of first 123 odd natural number​

Answer 1

Step-by-step explanation:

ANSWER

We know that even natural numbers are 2,4,6,8,10.......

It is in AP series

So,

a=2

d=2

n=123

S=

2

n

[2a+(n−1)d]

S=

2

123

[2×2+(123−1)×2]

S=

2

123

[4+122×2]

S=123×124

S=15252