Question

find the sum of first 30 odd natural number is......​

Answer 1

Answer:

First 30 odd natural numbers are 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59.

The sum = 900

900 is the sum of first 30 natural numbers

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Answer 2

Answer:

Step-by-step explanation:A.P : 1,3,5,...., upto 30 terms

a=1,d=2,n=30

Sn=n/2(2a+(n-1)d)

=30/2(2(1)+(30-1)2)

=15(2+29(2))

=15(2+58)

=15(60)

=900

Thus, the sum of first 30 odd natural numbers is 900