## How to solve a hard number system question for CAT confidently and quickly 8

Number system puzzle problem 8: Leftmost digit of a natural number at least 7 digits long is 3. When it is dropped, number becomes one-fifth...Read on.

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Submitted by Atanu Chaudhuri on Fri, 08/01/2021 - 22:55

Submitted by Atanu Chaudhuri on Wed, 06/01/2021 - 22:12

Number system puzzle problem 7: Cube of a number exceeds its product with two other numbers by 2, the cube of the second number is less than...Read on.

Submitted by Atanu Chaudhuri on Tue, 05/01/2021 - 20:50

Solve Number system puzzle problem 6 in 1 min: Product of a 2 digit number and number formed by reversing digits of the first is 2430. Find smaller number.

Submitted by Atanu Chaudhuri on Mon, 04/01/2021 - 12:24

Number System Puzzle Problem 5: If 495 is subtracted from a 3 digit number with its digits reversed, you get the original number. Sum of digits...Read on.

Submitted by Atanu Chaudhuri on Sun, 03/01/2021 - 22:14

Learn how to solve number system puzzle problem 4 in 1 min: The sum of thousands and tens digits in a 4 digit number is 4, the sum of hundreds...Read on.

Submitted by Atanu Chaudhuri on Sun, 03/01/2021 - 16:15

Solve Number System Puzzle Problem 3 in 2 mins: Denominator of a fraction is less than the square of the numerator by 1. If 2 is added to both...Read on.

Submitted by Atanu Chaudhuri on Fri, 01/01/2021 - 18:12

Solve number system puzzle problem 2 in 90 secs: What 2 digit number is less than sum of squares of its digits by 11 and exceeds their doubled product by 5?

Submitted by Atanu Chaudhuri on Tue, 22/12/2020 - 23:37

9 squares puzzle: Find area of rectangle with 9 gradually smaller squares inside it and the side length of smallest square 3 units. Time 30 minutes.

Submitted by Atanu Chaudhuri on Thu, 17/12/2020 - 23:30

Surely you can solve the 3 digit number puzzle in 20 mins if you approach the puzzle with systematic problem solving techniques.

Submitted by Atanu Chaudhuri on Sat, 05/12/2020 - 01:45

What is in 2012th position of PROBLEMSOLVINGPROBLEMSOLVING... continued indefinitely? To solve the repetition pattern riddle, find a rule in repetitions.