What are the two natural numbers whose product is 2400 and the sum of whose squares is 5200?

The sum of squares of two positive integers is 1025 and difference of their squares is 225. What percent is the difference of the numbers of their product?

The difference between the squares of two numbers is 256000 and the sum of the numbers is 1000. The number are

The value of a 2-digit number is 5 times the sum of the digits. What is the product of the digits ?

Difference between squares of two consecutive numbers is 59. What are the numbers?

The sum of first 45 natural numbers is: