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BECE Mathematics 2014 Paper

Question : 38

Total: 40

\binom{4}{11}=\binom{x-3}{11}

x

Solution:

Concept:

When two column vectors are equal, their corresponding components are equal.

Explanation:

Given:

\binom{4}{11} = \binom{x-3}{11}

Equate the top components:

4 = x - 3

Add

3

to both sides:

x = 4 + 3

So,

x = 7

The bottom components

11 = 11

also match, confirming the solution.

Answer:

x = 7

This corresponds to option C.

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