Out of 14 articles,10 are of same type and each of the remaining is of different types..Find the number of combinations ,if 10 articles are taken at a time.

Out of 14 articles, 10 are of the same type and each of the remaining is of different type. Find the number of combinations if 10 articles are taken at a time ?

Of the 14 articles , 10 are of sme type and each of the remaining is of different type . Find the number of combinations if 10 articles are taken at a time .

Of the 17 articles , 12 are alike and the remaining 5 are different . Find the numbers of combinations , if 13 articles are taken at a time .

Out of 17 comodities 12 are same type and 5 are different type. Find the number of combinations if 13 comodities are taken at a time.

Find the number of combinations in the letters of the word STATISTICS taken 4 at a time .

Find the number of permutations and the number of combinations in the letters of the word 'EXPRESSION' taken four at a time.

Out of 14 marbles 10 are red in colour and remaining 4 are of different colours.How many ways can you select 10 marbles out of these 14 marbles?

Some points are plotted on a plane such that any three of them are non collinear. Each point is joined with all remaining points by line segments. Find the number of points if the number of line segments are 10.

A cottage industry produces a certain number of pottery articles in a day. It was observed on a particular day that the cost of production of each article (in rupees) was 3 more than twice the number of articles produced on that day. If the total cost of production on that day was Rs 90, find the number of articles produced and the cost of each article.

Show that in the number of combinations of 2n different things taken n at a time , the number of combinations in which a particular thing occurs , is equal to the number in which it does not occur .