One ticket is drawn at random from a bag containing 30 tickets numbered from 1 to 30. Find the probability that, (a) It is a multiple of 5 or 7 (b) It is a multiple of 3 or 5

A computer manufacturer knows that, in a box of 175 computer chips, 5 will be defective. Max will draw 2 chips at random, from a box of 175. Determine, to the nearest hundredth, the probability that Max will draw 2 non-defective chips.

Suppose a jar contains 18 red marbles and 13 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.

You pick 6 digits (0-9) at random without replacement, and write them in the order picked.What is the probability that you have written the first 6 digits of your phone number? Assume there are no repeats of digits in your phone number.Give your answer as a fraction.