Find the odd one out:

3, 5, 7, 12, 17, 19

The sum of two numbers is 25 and their difference is 13. Find the product.

 The probability that a number selected at random from the first 50 natural numbers is a composite number is -. 

Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a diamond is:

To reduce a 9 ml lotion containing 50% alcohol to a lotion containing 30% alcohol, the amount of water (in ml) that should be added is:

A runs 7/4 times as fast as B. If A gives B a start of 81 m, what is the distance to the winning post so that A and B might reach it at the same time?

A box contains 9 bulbs, 4 of which are defective. If 4 bulbs are chosen at random, what is the probability that at least one of the chosen bulbs is good?

A and B started a business with initial funding of Rs.10000 each. After 8 months, A withdraw his capital. Find the profit of A, if the profit of B at the end of year is Rs.15000.

There are two numbers, x and y. If 40% of the first number (x) is added to the second number (y), then the second number (y) increases to its five-fourths. Find the ratio of the first number (x) to the second number (y).

A committee of 5 members is to be formed out of 5 Math faculty members, 4 verbal faculty members, and 10 students. In how many ways can the committee be formed if the committee should contain at least 3 Math faculty members?