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CBSE Class 11-science Answered

Shankar has 6 friends. In how many ways can he invite one or more of them to a party at his home? Do you think true friendship is important in life? How?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Shankar has to select some or all of his 6 friends. This can also be done as follows: The friends may be invited singly, in two's, or in three's, ..., etc. The number of such selections is C (6, 1) + C (6, 2) + C (6, 3) + C (6, 4) + C (6, 5) + C (6, 6) = 6 + +++6+ 1 = 6 + 15 + 20 + 15 + 6 + 1 = 63

Yes, true friendship makes life easier. Friends are the pillars of strength and give us the much needed support and comfort that we all seek in life.

Answered by | 04 Jun, 2014, 03:23: PM

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