Subject Experts Solutions for Chapter: Number Systems, Exercise 1: PRACTICE QUESTIONS (CLASSROOM WING)

$3.\overline{4}+5.\overline{8}-7.\overline{9}$

Find the least three-digit number which when divided by $20, 30, 40$ and $50$, leaves s remainder $10$ in each case.

Find the value of $\sqrt{5}$ up to $2$ places of decimals.

In a class, there are $72$ boys and $64$ girls. If the class is to be divided into the least number of groups such that each group contains either only boys or only girls, then how many groups will be formed?

Two bells toll at intervals of $120$ and $180s$, respectively. If they toll together at $12$ noon, then what is the earliest time at which they toll together?

A man purchased a plot which is in the shape of a square. The area of the plot is 12 hectares 3201 m^2. Find the length of each side of the plot.

Find the divisor, given that the dividend is $2200$, remainder is 13, and the divisor is one-third of the quotient.

A certain number of men went to a hotel. Each man spent as many rupees as one-fourth of the men. If the total bill paid was $₹20449$, then how many men visited the hotel?