One is asked to say a two digit number. What is the probability of getting a multiple of 9?
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Answer:
1/10
Step-by-step explanation:
The two digit numbers with both the digits same are 11, 22, 33, 44, 55, 66, 77, 88 and 99
..total no: of two digit numbers having both
digits same = 9
also, total no: of two digit numbers = 90
probability of getting a two digit number with both the digit same =
total no: of two digit number having both digit same
total no: of two digit numbers
= 9/90 = 1/10
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