There are counters available in 7 different colours. Counters are all alike except colour and they are atleast ten of each colour. Find the number of ways in which an arrangement of 10 counters can be made. How many of these will have counters of each colour?

The number of ways in which 5 beads of different colours can be made into a necklace is

The number of ways in which 5 beads of different colours can be made into a necklace is

The number of ways in which 5 beads of different colours can be made into a necklace is

There are counters available in 8 different colours (atleast 10 of each colour) Counters are at alike except for the colour.same colours Number of ways in which 5counters can be selected which consist of atleast2counters of same colour is

There are counters available in 3 different colours (atleast four of each colour). Counters are all alike except for the colour. If 'm' denotes the number of arrangements of four counters if no arrangement consists of counters of same colour and 'n' denotes the corresponding figure when every arrangement consists of counters of each colour, then :

The number of ways in which 20 different pearls of two colours can be set alternately on a necklace,there being 10 pearls of each colour,is

Out of 20 different pearis, if there are 10 pearls of each colour, then the number of ways in which two colours can be set alternately on a necklace, is

There are four balls of different colours and four boxes of colours same as those of the balls. Find the number of way in which the balls ,one in each box,of its own colour.

The number of ways in which 20 different pearls of two colours can be set alternately on a necklace, there being 10 pearls of each colour, is