MCQ
The value of 6C4 is:
- A6
- B9
- C15
- D240
Solution:
$^6\text{c}_4=^6\text{c}_{6-4}=^6\text{c}_2=\frac{6\times5}{2\times1}=15$
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The equation of the straight line passing through the point (3, 2) and perpendicular to the line y = x is: