In a simultaneous throw of a pair of dice, find the probability of getting:
(i) 8 as the sum
(ii) a doublet
(iii) a doublet of prime numbers
(iv) a doublet of odd numbers
(v) a sum greater than 9
(vi) an even number on first
(vii) an even number on one and a multiple of 3 on the other
(viii) neither 9 nor 11 as the sum of the numbers on the faces
(ix) a sum less than 6
(x) a sum less than 7
(xi) a sum more than 7
(xii) at least once
(xiii) a number other than 5 n any dice.
(xiv) even number on each die
(xv) 5 as the sum
(xvi) 2 will come up at least once
(xvii) 2 will not come either time
Sample space = 36
(i) n(E) = 5
(ii) n(E) = 6
(iii) n(E) = 3
(iv)
(v)
(vi)
(vii)
(viii) Number of event with sum 9 or 11 = 6
∴ Number of events of not getting a sum of either 9 or 11 = 36 – 6 = 30
(ix)
(x)
(xi)
(xii)
(xiii)