<h2>
Answer:</h2>
<u>Sample space</u> = {10, 11, 12, 13, 14, 20, 21, 22, 23, 24, 30, 31, 32, 33, 34, 40, 41, 42, 43, 44}
∴ n(S) = 20 .
[i] <u>Let A be the event that the number so formed is a prime number</u>.
∴ A = {11,13,23,31,41,43}
∴ n(A) = 6
So, P(A) = n(A)/n(S) = 6/20
∴ P(A) = 3/10.
[ii] <u>Let B be the event that the number so formed is a multiple of 4</u>.
∴ B = {12,20,24,32,40,44}
∴ n(B) = 6
So, P(B) = n(B)/n(S) = 6/20
∴ P(B) = 3/10.
[iii] <u>Let C be the event that the number so formed is a multiple of 11</u>.
∴ C = {11,22,33,44}
∴ n(C) = 4
So, P(C) = n(C)/n(S) = 4/20
∴ P(C) = 1/5.
