How to find the value of the combination? show your work! thansk!

A

Step-by-step explanation:

Using the definition

n =

where n! = n(n - 1)(n - 2).... × 3 × 2 × 1

Then evaluating numerator and denominator

10

=

=

Cancel 7(6)(5)(4)(3)(2)(1) on numerator/ denominator, leaving

= = = 120

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6

=

=

Cancel 4(3)(2)(1) on numerator/ denominator, leaving

= = 15

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Dividing numerator by denominator gives

= 8 → A

69

step-by-step explanation:

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5