Question

find the sum of all odd natural numbers less than 50 by using matrices​

Answer 1

Answer:

( 1+3+.......+49)

a=1

d=2

l=49

49=1+(n-1) 2

n=25

s=n/2(a+l)

25/2×50

=625

or,sum of odd number= n^2

since,n=25

so,sum=625

Answer 2

Answer:

625 is the correct answer as I think