Combinations

Letters of the word $\mathrm{DIRECTOR}$ are arranged in such a way that all the vowels come together. Find total number of arrangements?

If $15$ people won prizes in the state lottery (assuming that there are no ties), how many ways can these $15$ people win first, second, third, fourth and fifth prizes?

Find the total number of combinations of three letters, J, R, T taken $1$, $2$, $3$ at a time.

In each question below a combination of name and address is given, followed by four such options, one each under the columns A,B, C and D. You have to find out the combination which is exactly the same as the combination in the question. The number of that option which contains that combination is the answer.

G. Nath StoresL. R. ChowkKota -324002

The number of ways can $3$ nurses and $4$ engineers be seated on a bench with the nurses seated together is?

In each question below a combination of name and address is given, followed by four such options, one each under the columns A,B, C and D. You have to find out the combination which is exactly the same as the combination in the question. The number of that option which contains that combination is the answer.

Yogi chaphriderNiranjan AshramNaseek -422013

How many permutations can be made out of the letters in the word island taking four letters at a time?

Inequalities in which items compared are never equal to each other is classified as

In how many ways can a committee of three consisting of two chemical engineers and one mechanical engineer can be formed from four chemical engineers and three mechanical engineers?

How many committees can be formed by choosing $4$ men from an organisation of a membership of $15$ men?

There are four balls of different colours. Two balls at a time are taken and arranged any way. How many such combinations are possible?

If ${}^{1000}c_{98}={}^{999}c_{97}+{}^{x}c_{901}$ then the value of x will be

In each question below a combination of name and address is given, followed by four such options, one each under the columns A,B, C and D. You have to find out the combination which is exactly the same as the combination in the question. The number of that option which contains that combination is the answer.

E.T.N. HospitalZahermargBilandoli Garden

In each question below a combination of name and address is given, followed by four such options, one each under the columns A,B, C and D. You have to find out the combination which is exactly the same as the combination in the question. The number of that option which contains that combination is the answer.

Phiroz GerablHarmit palaceSamaita nagar

There are $13$ teams in a tournament. Each team is to play with each other only once. What is the minimum number of days can they all play without any team playing more than one game in any day?

Four different coloured flags can be hung in a row to make coded signal. How many signals can be made if a signal consists of the display of one or more flags?

In how many ways can you invite one or more of your five friends in a party?

Five different Mathematics books,$4$ different electronics books, and $2$different communications books are to be placed on a shelf with the books of the same subject together. Find the number of ways in which the books can be placed?

In each question below a combination of name and address is given, followed by four such options, one each under the columns A,B, C and D. You have to find out the combination which is exactly the same as the combination in the question. The number of that option which contains that combination is the answer.

B. K. BhushanAnant jeweller'sK hajureth-4711606

How many different ways can $5$ boys and $5$ girls form a circle with boys and girls alternate?