R. Gupta Solutions for Exercise 1: MATHEMATICAL NUMBER PROBLEMS

How many numbers from $1$ to $50$ will be left out of the numbers which are exactly divisible by $7$ and having $7$ as one of the digits are removed$?$

Mohan is $13$th from either ends of a row of boys. How many boys are there in that row$?$

A number which is divided by $9$ gives $15$ as quotient and $3$ as remainder. Find that number.

A number is four less than six times the other number. If the sum of both the numbers is $38$, what are the numbers$?$

In a class of $60$ where boys are twice that of girls, Shriya ranked ${17}^{th}$ from the top. If there are $9$ boys ahead of Shriya, how many girls are after her in rank $?$

If all the odd numbers from $1$ to $50$ are removed and so also those which are divisible by $5$, then how many numbers would remain$?$

A number is five times less than the other number. If the difference between the numbers is $24$, then what is the smaller number?

In a class, Dabbo is ${16}^{th}$ in rank from the top and Gopi is ${12}^{th}$ ahead of Dabbo. If there are $36$ more ranks behind Gopi, then how many students are there in the class$?$