102, 105, 108, 111, ..., 999.
102 and difference  'd' as 3.
Required sum = 300/2[2*102 + 299*3] = 165150.
Which of Following is not divisible from 4 ?
If last 2 digits are divisible by 4, then number is also divisible by 4.
What should be the value of * in 985*865, if number is divisible by 9?
Sum of 4 childeren born at interval of 4 years is is 36. What is the age of youngest child?
A is 5 years older than B who is thrice as old as C. If the total of ages of A, B and C is 40, then how old is C ?