top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Sonal asked the class to see if they could find the sum of the first 50 odd numbers. As everyone settled down.........

0 votes
38 views

Sonal asked the class to see if they could find the sum of the first 50 odd numbers. As everyone settled down to their addition, Lavesh ran to her and said, ‘The sum is 2,500.’ Ms Sonal thought, ‘Lucky guess,’ and gave him the task of finding the sum of the first 75 odd numbers. Within 20 seconds, Lavesh was back with the correct answer

How does Lavesh find the sum so quickly and what is the answer?

posted Oct 9 by Pushpak Chauhan

Looking for solution? Promote on:
Facebook Share Button Twitter Share Button LinkedIn Share Button




Similar Puzzles
0 votes
Saurabh was asked to find the average of first 'n' natural numbers. By mistake, he added a number twice............

Saurabh was asked to find the average of first 'n' natural numbers.
By mistake, he added a number twice but he didn't noticed it.
As a result, he obtained a wrong average of 31.3.
Find the number he added twice?

0 votes
When asked for the sum of two numbers one person said 23 and other said 210. They were both wrong...

When asked for the sum of two numbers one person said 23 and the other said 210. They were both wrong because they had correctly done the wrong calculation. What were the numbers and what had each done?

0 votes
A new girl came in Class. Everyone asked for her name. But she did not tell her name to anyone. While leaving..........

A new girl came in Class.
Everyone asked for her name.

But she did not tell her name to anyone.
While leaving the class she wrote a date on the board.

31 Dec

What is the name of the girl ?

...