A 2n digit number starts with 2 and all its digits are prime, then the probability that the sum of any two consective digits of the number is prime is
There are two urns AandB . Urn A contains 5 red, 3 blue and 2 white balls, urn B contains 4 red, 3 blue, and 3 white balls. An urn is chosen at random and a ball is drawn. Probability that ball drawn is red is a.9/10 b. 1/2 c. 11/20 d. 9/20
If n persons are seated on a round table, what is the probability that two named individuals will be neighbours?
Consider f(x)=x3+ax2+bx+c Parameters a,b,c are chosen as the face value of a fair dice by throwing it three times Then the probability that f(x) is an invertible function is (A) 365 (B) 368 (C) 94 (D) 31
A fair die is tossed repeatedly. A wins if if is 1 or 2 on two consecutive tosses and B wins if it is 3,4,5 or 6 on two consecutive tosses. The probability that A wins if the die is tossed indefinitely is 1/3 b. 5/21 c. 1/4 d. 2/5
The probability that at least one of the events AandB occurs is 0.6. If AandB occur simultaneously with probability 0.2, then find P(A)+P(B)˙
Four person independently solve a certain problem correctly with probabilities 21,43,41,81˙ Then the probability that he problem is solve correctly by at least one of them is 256235 b. 25621 c. 2563 d. 256253
Two integers are chosen at random and multiplied. Find the probability that the product is an even integer.