Question

Each 2 digit number is written on paper slips and these are all put in a box.

a) What are the numbers with both digits same ?.

b) What are the numbers in which product of digits is a perfect square ?.

c) If a slip is taken without looking it , find the probability to get the

number with both digits same ?.

d)What is the probability that product of digits is a perfect square ?.

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Answer 1

$\huge\mathfrak{Nhi\:pta}$

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