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17. Combinations
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Q4 of 118 Page 17

Mark the correct alternative in the following:

If , then r is equal to


r + 1 + r – 1 = 20 ( nCx = nCy ⇒ n = x + y or x = y )


2r = 20


r = 10

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2

Mark the correct alternative in the following:

If , then is equal to


3

Mark the correct alternative in the following:

If , then r is equal to


5

Mark the correct alternative in the following:

If , then is equal to


6

Mark the correct alternative in the following:

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Questions · 118
17. Combinations
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