Question

Ella and Amy are planning trips to

Answer 1

Applying the combination formula, the number of ways there are is: 66.

What is Combination?

Combination is a technique in maths used in selecting objects from a group of objects in a way that the order in which they are selected does not matter.

Combination formula is given as:

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

Given the following:

• n = 12
• r = 2

Plug in the values:

$12C_2 = \frac{12!}{2(12 - 2)!}\\\\12C_2 = \frac{12!}{2(10)!}\\\\12C_2 = \frac{12 \times 11}{2(1)}$

$\mathbf{12C_2 = 66}$

Therefore, applying the combination formula, the number of ways there are is: 66.

Learn more about combination on:

brainly.com/question/25821700