How many 3 digits numbers are divisible by 9 in 187, 648, 543, 837
Correct Answer: Option A
We know that:
A number is divisible by 9 only when the sum of its digits is divisible by 9
Now,
⇒ Sum of digits of 187 = 1 + 8 + 7 = 16 is not divisible by 9
⇒ Sum of digits of 648 = 6 + 4 + 8 = 18 is divisible by 9
⇒ Sum of digits of 543 = 5 + 4 + 3 = 12 is not divisible by 9
⇒ Sum of digits of 837 = 8 + 3 + 7 = 18 is divisible by 9
∴Required number of numbers divisible by 9 is 2
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