Principal Mohan Lal and J.C. Nijhawan Solutions for Chapter: Factors and Multiples, Exercise 3: Worksheet III

Replace $\square$ by a digit so that number is divisible by $9$.

$384\square 62$

Replace $\square$ by a digit so that number is divisible by $9$.

$9080\square$

Replace $\square$ by a digit so that number is divisible by $9$.

$1\square 80498$

Replace $\square$ by a digit so that number is divisible by $9$.

$46\square 21$

If a number is divisible by $18$, it must be divisible by $\text{6 and 3.}$

If a number is divisible by both $9\text{ and} 10$, then it must be divisble by $90.$

All the numbers which are divisible by $8$ are divisible by $4$.

If a number is exactly divisible by two numbers separately then it must be exactly divisible by their sum.