Answer:
0.4375
Step-by-step explanation:
To find the decimal equivalent you have to divide the numerator by the denominator.
7 ÷ 16 = 0.4375
126
n! / (r! (n-r)!)
In this case n = 9 and r = 4
9!/ (4! * (9-4)!)
9!/ (4! * 5!)
= 126
9! = 9x8x7x6x5x4x3x2x1