Question

A machine generates a two-digit number randomly. Find the probability that the Number is a) Greater than 87 [1] b) Divisible by 4

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

a)2-digit numbers : 10, 11, 12, 13, 14, . . . . . . . . . . . 99

   Total no. of 2-digit numbers = 90

   Total no. of favourable numbers = 12

Probability =  Favourable Outcome / Total Outcome

Probability = 12 / 90

                        2 / 15

The probability is 2/15.

b)2-digit numbers : 10, 11, 12, 13, 14, . . . . . . . . . . . 99

   Total no. of 2-digit numbers = 90

   Total no. of favourable numbers = 22

Probability =  Favourable Outcome / Total Outcome

Probability = 22 / 90

                       11 /45

The probability is 11/45.

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