To the nearest hundredth , how many cm are 10 in ? (1 in=2.54 cm)
a) 24.5 cm
b) 25.40 cm
c) 245.40
d) 254.40 cm

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236