Question

When a number is multiplied by 18 then all the digits of the product is to only what will be the least number of 2 is in such type of product?

Answer 1

Answer:

Step-by-step explanation:

According to the question

x*18=444....

x=(444....)/18

x=(222....)/9

we know that any no. is divisible by 9 only when sum of all its digit is divisible by 9

so

2+2+2...9times=18 which is divisible by 9

so

x=222222222

so there r 9 digits in x.

Answer 2

Answer:

According to question:-

X x 18=>444

=>X=>444/18

=>X=>222/9

now nine times two ,will be divisible from 9

x=>222222222