Correct Option: B

Let P be the probability that six happens in a fair dice,

∴ p =	1	, q =	5
	6		6

Let X, be the number of times ‘six’ happens Probability of obtaining atleast two ‘six’ in throwing a fair dice 4 times is
= 1 – {P (X = O) + P (X = 1)}
= 1 – {⁴C₀ P°q⁴ + ⁴C₁, P’q³}