q: Jade has 4 flavors of ice cream in his parlor. How many options are there for James to pick a one-flavor, two-flavor, three-flavor or four-flavor order?
Options:
(A) 15
(B) 13
(C) 14
(D) 17
(E) 18
a: OK... 4C1 + 4C2+ 4C3+4C4 = 15.
The answer is (A).

q: John left home and drove at the rate of 45 mph for 2 hours. He stopped for lunch then drove for another 3 hours at the rate of 45 mph to reach his destination. How many miles did John drive?
Options:
(A) 235 miles.
(B) 245 miles.
(C) 225 miles.
(D) 265 miles.
(E) 275 miles.
a: OK... The total distance D traveled by John is given by
D = 45 * 2 + 3 * 45 = 225 miles.
The answer is (C).

q: There are 10 flavors of ice cream, 3 types of nuts and 5 types of fruit at an ice cream store. If a person can choose 2 ice cream flavors as base, 2 types of nuts and 2 types of fruit. How many different variations are possible if repetition is allowed ?
Options:
(A) 150
(B) 250
(C) 22500
(D) 225
(E) 225000
a:
OK... Ice cream flavors: 10x10 = 100
Nuts: 3x3 = 9
Fruit: 5x5 = 25
Total = 22500
The answer is (C).