Question

if 6 balls were packed in carton and total number of balls are n find the number of cartons​

Answer 1

Step-by-step explanation:

There are a total of 6 red balls, 5 white balls, and 5 blue balls.

9 balls have to be selected in such a way that each selection consists of 3 balls of each colour.

Here,

3 balls can be selected from 6 red balls in

6

C

3

ways.

3 balls can be selected from 5 white balls in

5

C

3

ways.

3 balls can be selected from 5 blue balls in

5

C

3

ways.

Thus, by multiplication principle, required number of ways of selecting 9 balls

6

C

3

×

5

C

3

×

5

C

3

=

3!3!

6!

×

3!2!

5!

×

3!2!

5!

=

3!×3×2×1

6×5×4×3!

×

3!×2×1

5×4×3!

×

3!×2×1

5×4×3!

=20×10×10

Class 8

Answer 2

Answer:

12 n

Step-by-step explanation:

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