Question

Write the sample space, and number of

sample point n(s)

A two digit number is formed with digits 2, 3,

5 without repetition​

Answer 1

The sample space is

S={10,12,13,14,15,20,21,23,24,25,30,31,32,34,35,40,41,42,43,45,50,51,52,53,54}

∴n(S)=25

Now U is event that the number so formed is divisible by 5.

∴U={10,15,20,25,30,35,40,45,50}

∴n(U)=9