Question

there are 8 boys and and 15 girls are in a class in how many way a birthday party can be arranged. if it consists of 4 boys and 3 girls​

Answer 1

Answer:

Total Students =10+8=18

Total boys =10

Total circles =8

∴ Total no. of combination of three students =

18

C

3

2 girls and 1 boy(possible combination) =

8

C

2

×

10

C

1

⇒ Probability =

Totalcombination

Possiblecombination

=

18

C

3

8

C

2

×

10

C

1

=

18×17×16

8×7×5×3×2

=

102

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