ProbabilityHard
Question
A number is chosen at random from the numbers 10 to 99. A number whose product of digits is 12 will be called a good number. If he choose three numbers with replacement then the probability that he will choose a good number at least once is
Options
A.0.872
B.0.127
C.0.562
D.None of these
Solution
P(Product of digits) = 12
if 34, 43, 26, 62
P(A) =
P
= 
Probability = 1 -
if 34, 43, 26, 62
P(A) =
P
= Probability = 1 -
Create a free account to view solution
View Solution FreeMore Probability Questions
7 persons are stopped on the road at random and asked about their birthdays. If the probability that 3 of them are born ...Two dice are thrown together. If 3 appears on at least one of the dice, then what is the probability that the sum is gre...A 2n digit number starts with 2 and all its digits are prime, then the probability that the sum of all 2 consecutive dig...If A and B are any two events such that P (A + B) = 5/6, P (AB) = 1/3, P () =1/2, then the events A and B are-...Sixteen players s1, s2 ....... , s16 play in a tournament. They are divided into eight pairs at random. From each pair a...