Three balls are drawn from a bag containing 5 red 4 White and 3 black balls , find the number of ways in which this can be done , if alteast 2 balls are red.

6

(a)

Find the number of combinations , whwn some or all of n objects are taken at a time.

6

(a)

How many automobile lincene plates can be made, if each plate contains two different letters followed by three different digits?

6

(a)

A student has to answer 10 questiion choosing atleast 4 from each part A and B . If there are 6 question in part A and 7 question from part B, in how many ways can the student choose 10 queations?

6

(a)

Using the digits 1,2,3,4,5,6,7,a number of different digit is formed . Find how many numbers are formed ? Further , Find how many of these are
(i) exactly divisible by 2 ?
(ii) exactly divisible by 25 ?
(iii) exactly divisible by 4 ?

6

(a)