An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount 'a'[..]

Decide whether you would use a permutation, a combination, or neither. Next, write the solution using permutation[..]

You are given three piles of 10 peso coin. One pile is a counterfeit coins, heavier than the genuine ones. Explain[..]

ten spheres of radius 1cm are immersed in liquid contained in a vertical cylinder of radius 6cm. calculate the rise[..]

How many committees of five can be formed from a group of six Republicans and three Democrats if each committee is[..]

In how many ways can ten cooks be assigned to three kitchens, if five cooks are needed for Kitchen One, two cooks[..]

Fran Mallory is married, claims five withholding allowances, and earns $3,500 (gross) per month. In addition to[..]

On Monday Carlito began the day with 10 subway tokens and by night he had used some of them. On Tuesday he doubled[..]

The ratio of Harry to Aaron's money is 2:5. Harry has $33 less than Aaron. How much do they have altogether?

mark the electrician charges $115 for a house call, and the $40 per hour for labor. Sara the electrician charges $65[..]