MCQ
$648340021$ is written with commas as (International System).
  • $648,340,021$
  • B
    $6,4,8,3,4,0,0,2,1$
  • C
    $64,83,40,02,1$
  • D
    None of these

Answer

Correct option: A.
$648,340,021$

In international system of numeration
The $1st$ period consists of - ones, tens and hundred.
The $2nd$ period consists of - thousand, $10$ thousand and $100$ thousands.
The $3rd$ period consists of - million, $10$ million and $100$ million.
The $4th$ period consists of - billion, $10$ billion and $100$ billio.
$\therefore 648340021$ is written with commas as $($International System$) = 648,340,021$

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