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17. Combinations
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Q3 of 118 Page 17

Mark the correct alternative in the following:

If , then r is equal to


3r + r + 3 = 15 ( nCx = nCy ⇒ n = x + y or x = y )


4r + 3 = 15


4r = 12


r = 3

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1

Mark the correct alternative in the following:

If , then is equal to


2

Mark the correct alternative in the following:

If , then is equal to


4

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


Questions · 118
17. Combinations
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