Probability
Trending Questions
Q. Two squares are chosen at random on a chessboard, the probability that they have a side in common is:
- 118
- none of these
- 332
- 132
Q. Seven digits from the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 are written in random order. The probability that this seven digit number is divisible by 9 is:
- 79
- 19
- 29!
- 49
Q. A four digit number is formed with the digits 1, 3, 4, 5 without repetition. Find the chance that the number is divisible by 5:
- 34
- 14
- 916
- 116
Q. From a group of 3 men and 2 women, two persons are selected at random. Find the probability that atleast one woman is selected.
- 15
- 710
- 25
- 56
Q. Three of the six vertices of a regular hexagon are chosen at random. The probability that the triangle with these three vertices is equilateral equals:
- 13
- 110
- 16
- none of these
Q. Two numbers b and c are chosen at random with replacement from the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9. The probability that x2+bx+c>0 for all xϵR is:
- 2381
- 79
- 3281
- 65729
Q. A letter is taken out at random from 'ASSISTANT' and another is taken out from 'STATISTICS'. The probability that they are the same letters is:
- 3596
- 1990
- 1996
- none of these
Q. Four numbers are multiplied together. Then the probability that the product will be divisible by 5 or 10 is:
- 169625
- 369625
- 1691626
- none of these
Q. Nine squares are chosen at random on a chessboard. What is the probability that they form a square of size 3 × 3?
- 964C9
- 664C9
- none of these
- 3664C9
Q. The digits 1, 2, 3, 4, 5, 6, 7, 8, 9 are written in random order to form a nine digit number. Find the probability that this number is divisible by 4:
- 49
- 29
- 1781
- none of these