Recent questions tagged probability

1 votes
1 answer
812
A pair of dice is rolled and the sum is determined. The probability that a sum of 5 is rolled before the sum of 8 is rolled in a sequence of rolls of dice is ____________...
4 votes
1 answer
814
4 votes
3 answers
815
1 votes
0 answers
816
In a production facility, iron rods are made with a mean diameter of 6cm and Standard Deviation of 0.02cm. If a large number of rods are tested, the approximate percentag...
4 votes
4 answers
817
A pair of dice is rolled, till a sum of either 5 or 7 obtained. Find the probability that 5 comes before 7?
2 votes
0 answers
819
Consider that, there are 365 days in a year, what is the probability that exactly two out of ten people are born on the same day?
4 votes
2 answers
820
Given 4 children lives in Mrs. A home. One fine day Mrs. A reveals to Mr. A that atleast 1 out of 4 children is a girl. Probability that there are exactly 3 girl in Mrs. ...
4 votes
0 answers
821
From a group of 30 students, what is the probability that at least two of them have birthday on the same day?
3 votes
1 answer
822
1 votes
0 answers
823
4 friends (Alex, Blake, Chris and Dusty) each choose a random number between 1 and 5. What is the chance that any of them chose the same number?Ans:101/125
1 votes
0 answers
825
If a random coin is tossed $11$ times, then what is the probability that for $7$th toss head appears exactly $4$ times?$5/32$$15/128$$35/128$None of the options
1 votes
0 answers
827
Probabilty
0 votes
1 answer
828
0 votes
0 answers
829
If A and B are independent, then A and Bc are also independentIs it true or false?
0 votes
0 answers
831
Can someone mathematically derive this equation?P(A/B)>P(A)
4 votes
0 answers
832
Q)100 dices are thrown. How many are expected to fall either a 3 or 6 _______.
2 votes
0 answers
834
2 votes
0 answers
835
Q) Two cards are drawn together from a pack of 52 cards. The probability that one is spade and other is king, isA) 1/26B) 2/51C) 8/221D) None of these
1 votes
2 answers
836
If a random coin is tossed 11 times then what is the probability that for 7th toss head appears exactly 4 times?5/3215/12835/128None of the options
0 votes
0 answers
837
0 votes
1 answer
838
0 votes
1 answer
839
i have done it like this.....(1/8)3+ 7/(8)3=8-2 .....how this is wrong...???
0 votes
0 answers
840