I have four 3 cents stamps and three 5 cents stamp using one or more of these stamps. Using one or more of these stamps. How many different amounts of postage can I make?
Four 3 cents stamps can be used in 4 different ways (using 1 stamp, 2 stamps, 3 stamps and 4 stamps at a time)
Similarly Three 5 cents stamps can be used in 3 different ways.
So both stamps together can be used in 4*3 = 12 different ways.
=> Total different ways = 4+3+12=19
19 different amounts of postage can be made using the stamps.
thanks bruv
ReplyDelete*me cheating for online class*
ReplyDelete? Why did you do 4*3, then take the product and add 7?
ReplyDeleteDear Unknown, Maybe this helps.
DeleteEach stamp alone = 4 ways + 3 ways = 7 ways
Stamps together = 4 ways x 3 ways = 12 ways
Total = 12 ways + 4 ways + 3 ways = 19 ways
what happened to the 5 cents stamps?
ReplyDelete