Question 1173926: Kate wants to choose 3 out 13 different items as the Christmas presents. Given that 4 items are from
shop B, and 3 items are from shop C, find the number of combinations in each of the following cases,
Choosing 3 items from the same shop.
can you help me with this thank you so much :)
Found 2 solutions by ewatrrr, ikleyn:
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website!
Hi,
6 A 4 B, 3 C 13 different items
Choosing 3 items from the same shop:
find the number of combinations
(6C3)+ (4C3) + (3C3)
Wish You the Best in your Studies.
Answer by ikleyn(52817)  (Show Source):
You can put this solution on YOUR website! .
Kate wants to choose 3 out 13 different items as the Christmas presents. Given that 4 items are from
shop B, and 3 items are from shop C, find the number of combinations in each of the following cases,
Choosing 3 items from the same shop.
can you help me with this thank you so much :)
~~~~~~~~~~~~~~~~~
Formulation of this problem is LAME.
It is LAME, because it DOES NOT SAY that the rest of items, 13 - 4 - 3 = 6 are from the shop A.
Moreover, the shop A is not mentioned in the problem, at all.
Hey, are you OK there, at the opposite side of the Internet, formulating your tasks in this curved way ?
NEVER SAW such LAME formulation . . .
Who created it ? Who is the author ?
In such form, your creations are good only for re-cycling . . .
The same relates to the solution by @ewatrrr . . .
...............
In my understanding, when the tutor sees such a post, there is only one right way to treat it:
to return it to the visitor for correction.
Any other action is WRONG.
|
|
|
