Question

7.
Find the value of 6c3-4c2​

Answer 1

Answer:

this is ur ans

Answer 2

SOLUTION

TO DETERMINE

$\sf{ {}^{6} C_3 - {}^{4}C_2 }$

EVALUATION

$\sf{ {}^{6} C_3 - {}^{4}C_2 }$

$= \displaystyle \sf{ \frac{6!}{3!3!} - \frac{4!}{2!2!} }$

$= \displaystyle \sf{ \frac{6 \times 5 \times 4 \times 3!}{ 3 \times 2\times 3!} - \frac{4 \times 3 \times 2!}{2 \times 2!} }$

$= \displaystyle \sf{20 - 6}$

$= 14$

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