John has a set of cards laid on a table in this order:
a, b, c, d, e, f

his friend shuffles the order of the cards randomly, which results in this order:
d, f, b, c, a, e

if john is allowed to swap only 2 adjacent cards at a time, what is the smallest number of swaps to reach the original order of cards?

Aconvex octagon has interior angles that measures 73 degrees, 172 degrees, 132 degrees, 59 degrees, 154 degrees, 163 degrees, x degrees, 2x degrees find the value of the missing angles

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.