1. If = 1, = −2 = −1 then find the value of the following
1 answer:
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Answer:
Total number of ways will be 209
Step-by-step explanation:
There are 6 boys and 4 girls in a group and 4 children are to be selected.
We have to find the number of ways that 4 children can be selected if at least one boy must be in the group of 4.
So the groups can be arranged as
(1 Boy + 3 girls), (2 Boy + 2 girls), (3 Boys + 1 girl), (4 boys)
Now we will find the combinations in which these arrangements can be done.
1 Boy and 3 girls = =24
2 Boy and 2 girls=
3 Boys and 1 girl =
4 Boys =
Now total number of ways = 24 + 90 + 80 + 15 = 209