A six-faced fair dice is shown until 1 comes. Then the probability that 1 comes in even number of trials is (a) `1/6` (b) `1/36` (d) `1/18` (d) `3/28`

A six faced fair die is thrown until 1 comes. Then , the probability that 1 comes in even number is trials, is

A dice is thrown (2n+1) times. The probability that faces with even numbers show odd number of times is

In a sphere the number of faces is 1 (b) 2 (c) 3 (d) 4

If two dice are thrown simultaneously then probability that 1 comes on first dice, is

A purse contains 2 six-sided dice. One is a normal fair die, while the other has two 1s two 3s,and two 5s. A die is picked up and rolled. Because of some secret magnetic attraction of the unfair die, there is 75% chance of picking the unfair die and a 25% chance of picking a fair die. The dice is rolled and shows up the face 3. The probability that a fair die was picked up is (a) 1/7 (b) 1/4 (c) 1/6 (d) 1/24

A biased coin with probability p(0 lt plt 1) of falling tails is tossed until a tail appears for the first time. If the probability that tail comes in odd number of trials is (2)/(3) , then p equals

Two fair dice are rolled together. The probability that the difference of numbers appearing is 1 will be

consider f(x)=x^(3)+ax^(2)+bx+c Parameters a,b,c are chosen as the face value of a fair dice by throwing it three xx Then the probability that f(x) is an invertible function is (A) (5)/(36) (B) (8)/(36) (C) (4)/(9) (D) (1)/(3)

A die is rolled, then the probability that a number 1 or 6 may appear is a. 2/3 b. /6 c. 1/3 d. 1/2