Question

A two digit number is to be formed using digits 0,1,2,3,4. Repetition is allowed. Find the probability that number so formed is prime number.

Answer 1

S={10, 11,12,13,14,

20,21,23,24,

30,31,32,33,34,

40,41,42,43,44}

event A is of no. formed are prime no.

A={11,13,23,31,41,43}

I hope it's righr