Question

123 can be expressed as:

• A. $10\times 1+10\times 2+10\times 3$
  
• B. $100\times 1+100\times 2+100\times 3$
  
• C. $100\times 1+10\times 2+1\times 3$
  
• D. $1\times 1+1\times 2+1\times 3$

Answer 1

The correct option is C

$100\times 1+10\times 2+1\times 3$

$\text{Let the number be abc.}$

$\text{Then the general form of abc will be:}$
$100\times a+10\times b+1\times c$

$\text{Thus,}123=(100\times 1)+(10\times 2)+(1\times 3)$