Four objects in a set of ten objects are alike. Find the number of ways of arranging them in a circular order.

You have 2 identical books on English, 3 identical books on Hindi, and 4 identical books on Mathematics. Find the number of distinct ways of arranging the on a shalf.

Finding the number of ways in which ten things, of which 4 are alike, can be arranged in a circular order.

Find the number of seconds in 1 year. Express them in order magnitude.

Four parallel lines intersect another set of five parallel lines. Find the number of distinct parallelograms formed.

5 boys and 5 girls form a line. Find the number of ways making the seating arrangement is (i) Boys and girls are alternate (ii) All the girls together

A party has 20 participants. Find the number of distinct ways for the host to sit with them around a circular table. How many these ways have two specified persons on either side of the host?