MCQ
Mark the correct alternative in the following:
The difference between the greatest and smallest numbers which when rounded off a number to the nearest tens as $540,$ is:
  • A
    $10$
  • $9$
  • C
    $8$
  • D
    $10$

Answer

Correct option: B.
$9$
$544$ is the greatest number that when rounded off to the nearest tens will become $540.$
$535$ is the least number that when rounded off to the nearest tens will become $540.$
$\therefore$ Difference: $544 - 535 = 9$

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