top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

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

0 votes
179 views

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?

posted Sep 16, 2022 by Atif

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




Similar Puzzles
0 votes
A certain number is divided by five, seven is added and the result is quadrupled to...........What was the first number?

A certain number is divided by five, seven is added and the result is quadrupled to get a number 15 higher than the original number.
What was the first number?

0 votes
The average of squares of five consecutive even natural numbers is 792. What is the ratio of smallest number............

The average of squares of five consecutive even natural numbers is 792.
What is the ratio of smallest number to largest number?

0 votes
Difference between squares of two numbers is 8. Twice the square of first number by square of second number is 19...

Difference between squares of two numbers is 8. Twice the square of first number by square of second number is 19. What are the numbers?

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

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?

...