The problem asks for the sum of the first 25 odd numbers.
There is a well-known formula for the sum of the first N odd positive integers. The sum is equal to N squared ($N^2$).
In this question, we need to find the sum of the first 25 odd numbers. This means our value for N is 25.
Therefore, the sum of the first 25 odd numbers is 625.
If the arithmetic mean of a, b, c is \(\rm \frac M 3\) and \(\rm \frac{1}{a} + \frac{1}{b} = -\frac{1}{c} \) , then the arithmetic mean of a 2, b 2, c 2 is
A person saves Rs. 1000 more than he did the previous year. If he saves Rs. 2000 in the first year, in how many years will he save Rs. 170000?
How many natural numbers lie between 3 and 200 which are divisible by 7?
The arithmetic mean of 16 student's scores is 320. Find the sum of these scores.
How many three-digit numbers are divisible by 5?