Out of all the 2-digit integers between 1 and 100, a 2-digit

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Out of all the 2-digit integers between 1 and 100, a 2-digit number has to be selected at random. What is the probability that the selected number is not divisible by 7?

1. 13
  90
2. 12
  90
3. 78
  90
4. 77
  90

Correct Option: D

P(A) = 1 – P (A)

P(A) = 1 -	13	=	77
	90		90