Pictograms are shown by

The marks of 60 students of a college are shown by the following histogram. How many students have marks between 10 and 20? (Figure: histogram — marks 0-5: 5, 5-10: 10, 10-15: 20, 15-20: 15, 20-25: 1…

How many three-digit numbers are divisible by 5?

How many numbers between 11 and 90 are divisible by 7?

How many numbers between 100 and 500 are divisible by 4, 5 and 6?

How many numbers between 200 and 600 are divisible by 4, 5 and 6?