Abhijit Guha Solutions for Chapter: Number System, Exercise 1: Practice Problems Level 1

Find the smallest number which should be added to $7,56,896$ so as to obtain a multiple of $11$

What will be the quotient when $2,143$ is divided by $38$?

If the number ${583}_{-}437$ is completely divisible by $9$, then the smallest whole number in the place of the blank digit is:

On dividing a number by $38$ , we get $90$ as quotient and $19$ as remainder. What is the number?

The least number of five digits exactly divisible by $88$ is

The difference between the greatest and the least prime numbers less than $100$ are

The sum of two numbers is $75$ and their difference is $25$. What is their product?

A boy added all natural numbers from $1$ to $20$. However, he added one number twice, due to which the sum becomes $215$. What is the number he added twice?