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