Embibe Experts Solutions for Chapter: Playing With Numbers, Exercise 1: Exercise

Write the following number in generalised form.

$76$

Test the divisibility of each of the following numbers by $9$.

$273645$

Test the divisibility of each of the following numbers by $9$.

$9876543$

Test the divisibility of each of the following numbers by $9$.

$12345678$

Prove that a number is divisible by $11$ if the alternating sum of the digits of number is divisible by $11$ and verify if $4554$ is divisible by $11$. 

Prove the statement:

Any number whose sum of digits is divisible by $3$ is also divisible by $3$

Explain the proof of divisibility by $2$ and check whether $368$ is divisible by $2$ or not.

Explain the proof of divisibility by $2$ and check whether $560$ is divisible by $2$ or not.