In how many ways 7 person be selected from a gang of 16 person so that no fixed 4 person would be there
Answers
Answered by
2
Answer:
- 16C7 minus 16C4........
Answered by
1
Answer:
9620 IMP
Step-by-step explanation:
required no. of ways
= 16 C 7 - 16 C 4
= 16 C (16-7) - 16 C 4
= 16C 9 - 16 C 4
= (16×15×14×13×12×11×10/7!) - 16×15×14×13/4!
= 11440 - 1820 = 9620 ways
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