Thank you soo much. This sure helped.

Wow! Still looks pretty tough to me but it sure is a better approach than raw multiplication. Thank you very much Please can someone explain how (9/10)^10 was broken down to 0.348 without using a calculator or having to do a messy multiplication? I can't think of any easy way to do this except appro...

Ugly Multiplication

In a basketball contest, players must make 10 free throws. Assuming a player has 90% chance of making each of his shots, how likely is it that he will make all of his first 10 shots? [spoiler]Ans: The probability of making all of his first 10 shots is given by (9/10)* (9/10)* (9/10)* (9/10)* (9/10)*...

Thank you so much Brent and Guru. I knew there had to be a logicc, I just couldn't figure it out. This definitely helped!

Inductive Quant

Please can someone assist me with this question? Been trying to figure out how to approach it. Last month, 15 homes were sold in town X. The average (arithmetic mean) sale price of the homes was $150,000 and the median sale price was $130,000. Which of the following statements must be true? I) At le...

Answer is D x = 12hrs, y = 15 hrs, z = 18hrs y and z combined will do 1/15 + 1/18 in one hour which equals 11/90. x alone will do the 1/12 of the job in an hour. x:y and z = 1/12 : 11/90 = 15/22. this is the ratio of work done in an hour. The inverse of 15/22 which is equal to 22/15 gives us the rat...