Question

Write the smallest $8$-digit number using all odd digits in words in Indian system and write its successor in expanded form.

Answer 1

Step-1: Finding smallest $8$-digit number using all odd digits in words in Indian system:
Odd digits are $1,3,5,7,9$.

Now, while forming the smallest number, arrange the digits in ascending order and if repetition of digit is allowed, repeat the smallest digit.

So, $1,11,13,579$ is the smallest $8$-digit number using all odd digits.

Thus, the number $1,11,13,579$ in words can be expressed as One crore eleven lakh thirteen thousand five hundred seventy-nine.

Step-2: Finding the successor in expanded form:

Successor of a number is the number right after it and is obtained by adding $1$ to the number.

Successor of $1,11,13,579$ is $1,11,13,580$.

Thus, the expanded form of $1,11,13,580$ is:

$1\times 1,00,00,000+1\times 10,00,000+1\times 1,00,000+1\times 10,000+3\times 1,000+5\times 100+8\times 10+0\times 1$.

Hence, $8$-digit number is $1,11,13,579$ and succesor in expanded form is $1\times 1,00,00,000+1\times 10,00,000+1\times 1,00,000+1\times 10,000+3\times 1,000+5\times 100+8\times 10+0\times 1$.