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 5 counters can be selected which consist of atleast2 counters 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 :

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 angle of refraction is same for different colours.

There are greetings cards, each of a different colour and 7 envelopes of same 7 colours as that of the cards. The number of ways in which the cards can be put in envelopes, so that exactly 4 of the cards go into envelopes of respective colour 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

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

Which of the following pairs has almost same colours ?