Maths Maths Puzzle Numerical Ability

Use the arithematic sequence of numbers 2,4,6,8,10.....to find the sum of the first 20 terms.?

Read Solution (Total 2)

Maths Other Question

What is the sum of the following using the formula for an arithematic series.40+42+44+....+68. Can u find a six digit number under 3 lakh such that sum of it's digit is 31???