A two-digit number is formed with the digits 2,5 and 7, where repetition of digits is not allowed. Find the probability that the number so formed is a square number.
Open in App
Solution
The possible outcomes when a two-digit number is formed with the digits 2,5 and 7 are {25,27,52,57,72,75}. Therefore, the number of possible outcomes when a two-digit number is formed with the digits 2,5 and 7 is 6.
Now, the possible outcome of a square number is {25}, which means the number of favourable outcome is 1.