A die is tossed thrice, find the probability of an odd number at least once-
Answer & explanation
Correct answer: option 4
Probability of getting an odd number in a single through of a die = 3/6 = 1/2
Similarly, probability of getting an even number = 3/6 = 1/2
Probability of getting an even number three times = (1/2)x(1/2)x(1/2)
= 1/8
Therefore, probability of getting an odd number art least once = 1 -(probability of getting an odd number in none of the throws)
= 1 - (probability of getting an even number thrice)
= 1- (1/8)
= 7/8