A two digit number is chosen at random. Find the probablity that the number is i) less than 20 ii) a perfect square
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Answer:
i)1/9
ii)1/15
Step-by-step explanation:
Total number of two digit no.s=90
no.of numbers less than 20=10
∴probablity of no. less than 20=10/90=1/9
no.of two digit perfect squares=6(4,5,6,7,8,9)
∴probablity of no. as a perfect square=6/90=1/15
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