Answer:
0.1037
Step-by-step explanation:
(6C4 × 12C3)/18C7
3300/31824
275/2652 = 0.1037
Step-by-step
j = 2 and j =1 because they both have a lower value than 3
9.75 / 1.25 = 7.8
10^6 - 10^2 = 10^4
= 7.8 x 10^4 greater
1 because 91-18=1