What is the sum of all natural numbers between 100 and 400 which are divisible by 13? 

(444% of 521) ÷972=?

The number of integers in between 100 and 600, which are divisible by 4 and 6 both, is: 

The product of two positive numbers is 11520 and their quotient is $$9\over5$$.Find the difference of two numbers?

The least value of n, such that (1 + 3 + 3² + ... + 3ⁿ) exceeds 2000, is-

Four numbers, when arranged in ascending order, are w, x, y and z. The average of the smallest three numbers is 25.5 while the average of the largest three was 29.5. What is the range of the data?

The difference between the sum of four consecutive odd numbers and three consecutives even numbers together is 20. Also, the largest even number is 5 more than the largest odd number. What is the sum of the smallest odd number and the smallest even number?

Sum of two numbers is thrice their difference. Their ratio is