Wednesday
April 23, 2014

Homework Help: math-followup

Posted by rama on Wednesday, January 30, 2013 at 8:41am.

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly in the dark, how many shoes must I pick before for sure that there is one matching pair in red or blue?

Ms Sue answered 4. Request for explanation please.

math - Ms. Sue, Tuesday, January 29, 2013 at 10:13pm

With 3 picks she could have gotten 1 red, 1 blue, and 1 purple shoe. On the 4th pick, she has to pick one of the colors she already had. Therefore, it will take 4 draws before she'd be sure she had a pair.

math - correction - Ms. Sue, Tuesday, January 29, 2013 at 10:20pm
I just read it again -- to see that you must have a matching pair in red or blue.

You'll need 5 picks instead of 4.

Can somebody please clarify this (question is slightly modified)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math - A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking ...
math - A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking ...
math - Ryan reaches into his gym bag for a pair of running shoes. If there are ...
math 12 - Ryan reaches into his gym bag for a pair of running shoes. If there ...
math - john bought a bag, pai oh shoes ad a watch for $160 altogethe. the bag ...
math words problem - Rich’s weekly salary is based on the number of pairs of ...
simple equations ( math) - A shop sold 216 pairs of shoes in a month, which was...
Math - Mary has 8 pairs of dress shoes. How many different ways can she arrange ...
math-old - A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. ...
alegebra - if i bought 4 pairs of shoes for $325.50 and later bought another ...

Search
Members