A contest consists of ranking `10` songs of which `6` are Indian classic and `4` are westorn songs. Number of ways of ranking so that (mention correct statements)

A contest consists of ranking 10 songs of which 6 are Indian classic and 4 are westorn songs. Number of ways of ranking so that, There are exactly 3 indian classic songs in top 5 is (5!)^(3) .

In a test paper there are 10 questions . Number of ways in which 6 questions to be answered is

In a test paper there are 10 questions . Number of ways in which 6 questions to be answered is

A class consists of 50 students out of which there are 10 girls. In the class 2 girls and 5 boys are rank holders in an examination. If a student is selected at random from the class and is found to be a rank holder, what is the probability that the student selected is a girl?

A contest consists of pedicting the results (win, draw or defeat) of 10 foot ball matches. Then the number of ways n which one entry contains at least 6 icorrect results is (A) 3^10 - sum_(r=0) ^5 .^10C_r 2^r (B) 30^10-sum_(r=1)^5 .^10C_r 2^r (C) sum_(r=0)^5 .^10C_r (D) sum_(r=6)^5 .^10C_r 3^r

The number of ways in which 7 indians and 6 pakistanies sit around a round table so that no two indians are together is

There are 10 seats in the first row of a theater of which 4 are to be occupied.The number of ways of arranging 4 person so that no two persons sit side by side is:

A letter lock consists of 4 rings each marked with 10 different letters, the number of ways in which it is possible to make an unsuccessful attempts to open the lock is

The number of ways in which 5 pakistanics 5 indians can sit around a round table so that no two persons of the same country are to come together is