Choosing "r" things from a set of "n" can be done in this many ways:
combinations = n! / [r! * (n-r)!]
combinations = 7! / [3! * 4!]
combinations = 7 * 6 * 5 / 6
combinations = 35
Source:http://www.1728.org/combinat.htm
Answer:
30 5/6 square feet
Step-by-step explanation:
Answer:
20 glasses a day
Step-by-step explanation:
2.5litres equals 2500millilitres
2500÷125=20
Answer:
around like 51.2 miles driven
Answer:
+ 
=
+ 36 = 64
= 64-36
= 28
= 2
h = 5.29
Step-by-step explanation:
