Find the sum of first 100 natural numbers divisible by 3.

Find the sum of first n even natural numbers.

The sum of first n odd natural number is

Chosse the correct one The sum of first 100 natural number is

Find the variance of first n natural numbers.

Find the sum of the first 40 positive integers divisible by 6.

Find the sum of first n terms of even natural numbers .

The sum of first 100 natural number is a)5000 b)4950 c)5050 d)5150

D = ix : x is a prime number E = {x : x is a natural number divisible by 3 and less than 15} F = : xis an odd natural number less than 18). Find D nn E

D = ix : x is a prime number E = {x : x is a natural number divisible by 3 and less than 15} F = : xis an odd natural number less than 18). Find D nn F

D = {x : x is a prime number E = {x : x is a natural number divisible by 3 and less than 15} F = : {x is an odd natural number less than 18). Find D uu E