Rupesh Pathak and Vaishali Bhatia Solutions for Chapter: Playing with Numbers, Exercise 3: Exercise 5.2

What is the  largest number that can be written with four $2\text{'}\mathrm{s}$ .

 

What is the  largest number that can be written with four $1\text{'}\mathrm{s}$ .

 

Find four numbers whose sum is $45$, if the first number is $8$ and first number$+2=$second number$-2=$ third number$\times 2=$fourth number$÷2$

Find the smallest integer n such that $5\times 12\times \mathrm{n}$ is the product of three consecutive integers.

How many $3$-digit positive numbers may be formed so that the sum of the digits of $6$ ?

Is the number eleven thousand , eleven hundred and eleven is divisible by $3$.

Ritika made notes on loose pages  of the social science note book for self study. when she numbered the pages , she wrote $121$ in all.

a. How many pages are there in her notes.

Ritika made notes on loose pages  of the social science note book for self study. when she numbered the pages , she wrote $121$ in all.

b. How many times does the number $9$ appears in the page number ?