Probability of a multiple of `5` or `7` between `1` to `100`

How many multiple of 3 or 4 are there from 1 to 100?

How many multiples of 18 are there between 50 and 100?

The probability of having a multiple of 5 an throwing a dice is :

There are four, six faced dice marked 1 to 6 of which two are fair and two are loaded such that the probability of getting a multiple of 3 is twice as probable to get as any other number. A die is chosen at random and rolled. It shows six, the probability that it was biased, is 1/8 1/4 2/5 3/5

One ticket is drawn from 100 tickets, numbered from 1 to 100. Probability that the number on it is a multiple of 5 or 7 is

Suppose a fair die is rolled. Then the probability of getting a multiple of 2 or 3 or 5 is

Find the sum of all multiples of 7 lying between 500 and 900.

Find the probability of multiples of 7 in 1, 2, 3, .......,33, 34, 35.