The sum of two positive quantities is equal to `2ndot` the probability that their product is not less than 3/4 times their greatest product is a.`3//4` b. `1//4` c. `1//2` d. none of these

The sum of two positive quantities is equal to 2ndot the probability that their product is not less than 3/4 times their greatest product is 3//4 b. 1//4 c. 1//2 d. none of these

Given that the sum of two non-negative quantities is 200, the probability that their product is not less than 3//4 times their greatest product value is

If the sum to infinity of the series 1+2r+3r^2+4r^3+ is 9/4, then value of r is (a) 1//2 b. 1//3 c. 1//4 d. none of these

If the sum to infinity of the series 1+2r+3r^2+4r^3+ is 9/4, then value of r is 1//2 b. 1//3 c. 1//4 d. none of these

The number which exceeds its square by the greatest possible quantity is 1/2 (b) 1/4 (c) 3/4 (d) none of these

A four figure number is formed of the figures 1, 2, 3, 4, 5 with no repetitions. The probability that the number is divisible by 5 is 3//4 b. 1//4 c. 1//8 d. none of these

The third term of a geometric progression is 4. Then the product of the first five terms is a. 4^3 b. 4^5 c. 4^4 d. none of these

Two dice are thrown together. The probability that a lest one will show its digit greater than 3 is a. 1/4 b. 3/4 c. 1/2 d. 1/8

A 2n digit number starts with 2 and all its digits are prime, then the probability that the sum of all 2 consecutive digits of the number is prime is a. 4xx2^(3n) b. 4xx2^(-3n) c. 2^(3n) d. none of these

A father has 3 children with at least one boy. The probability that he has 2 boys and 1 girl is 1//4 b. 1//3 c. 2//3 d. none of these