Question

There are unlimited number of identical balls of 4 different colour.Number of arrangement of almost 8 balls in a row which can be made by using them is

Answer 1

Answer:

87380 is the answer

Step-by-step explanation:

At most - 8 balls

8,7,6,5,4,3,2,1

Let Colours B,4 Black, Red

(4

8

+4

7

4

6

+4

5

=4

3

+4

2

=4

1

)

=Sn=

a

(r−1)

(r

n

−1)

=

4−1

4(4

8

−1

=

3

4

(65536−1)

3

4(65535)

=87380

Hence, this is the answer.