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Combinatorics:02

(১)100 টি প্রশ্ন হতে কয়ভাবে এক বা একাধিক answer করা যাবে? Ans:100C1+100C2+....+100C100=2^100 -1


Translation:

Q. We have 100 questions. In how many ways can we answer at least one question?
Ans. 100C1+100C2+....+100C100=2^100 -1

Note by Sazzad Hossain Rafi
2 months, 2 weeks ago

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