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JEE MATHEMATICS MCQ: COMBINATIONS

1 Easy

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Understanding +4 | -1

Consider the following statements.

I. If there are

n

different objects, then

{ }^n C_r={ }^n C_{n-r}

,

0 \leq {r} \leq {n}

.

II. If there are

n

different objects, then

{ }^n C_r+{ }^n C_{r-1}={ }^{n+1} C_r, 0 \leq {r} \leq {n}.

Choose the correct option.

View answer and explanation

Correct option: B

Both are true

Option B (Both are true) is correct because both statements I and II represent fundamental properties of combinations.

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n