Question

Need urgent help in mathematics!! Will mark brainliest!!!!

Answer 1

₆C₃ is a combination.  you can find this setting in the statistics menu of your scientific calculator (i think).

If you don't have a scientific calculator, you can use the following formula:

nCr = $\frac{n!}{r!(n - r)!}$

₆C₃  = $\frac{6!}{3!(6 - 3)!}$

       = $\frac{6!}{3!(3)!}$

       = $\frac{6 * 5 * 4 * 3!}{3!(3)!}$

       =  $\frac{6 * 5 * 4 }{3 * 2}$

       = 5 * 4

      = 20

Answer: B