Math, asked by manavrathore728, 1 year ago

How many numbers are there between 101 and 999, which are divisible by both 2 and 5

Answers

Answered by mrunalinividya
4
a = 110 {first number to be divided by 2 and 5}
difference d =10
an=990  {last no to be divided by 2 and 5}
an = a + {n - 1}d
990 = 110 + 10n -10
880 + 10 = 10n
890 = 10n 
n = 89
∴ number of natural numbers between 101 and 999 is 89.
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