I am wanting to cut my own jelly rolls but I don't know how many to cut. I know there are 40 strips per roll, but how many rolls are needed to make a quilt approx. 56 x 76? Are there dupplicate strips, or is each one a different print? Sorry to bother you people with such stupid questions. I have plenty of fabric and want to use some to make a jelly role quilt. I hear so much about them on this board and would like to try one. Thanks a bunch.