/sci/ - Science & Math

File: 33 KB, 604x338, Herp.jpg [View same] [iqdb] [saucenao] [google]

Anonymous Sun Oct 17 23:09:15 2010 No.1912078 [Reply] [Original]

There are 12 questions on an examination, and each student must answer 8 questions including at least 4 of the first 5 questions. How many different combinations of questions could a student choose to answer?

Please help a fella out. I know the stuff, but this type of question defeats me.

Pic related, it's like me.

>>	Anonymous Sun Oct 17 23:10:15 2010 No.1912083 google your question

>>	Anonymous Sun Oct 17 23:16:15 2010 No.1912104 File: 21 KB, 372x431, Herp2.jpg [View same] [iqdb] [saucenao] [google] My bad, stupid question, I guess.

>>	Anonymous Sun Oct 17 23:19:15 2010 No.1912112 5C4*7C4+8C3?

>>	Anonymous Sun Oct 17 23:20:15 2010 No.1912121 >>1912112 Nearly. 5C4*7C4+7C3

Advanced search
Text to find
Subject [?]Search by post subject. Leave empty for any.
Username [?]Search for user name. Leave empty for any user name.
Tripcode [?]Search for tripcode. Leave empty for any.
Email [?]Search by email. Leave empty for any.
Filename [?]Search by image filename. Leave empty for any.
From Date [?]Enter what date to start searching from. Format is YYYY-MM-DD
To Date [?]Enter what date to start searching until. Format is YYYY-MM-DD
Image hash
Search in	All Posts OPs Only
Deleted posts	Show all posts Show only deleted posts Only show non-deleted posts
Internal posts	Show all posts Show only internal posts Show only archived posts
Order	New posts first Old posts first
Capcode	All Posts Only by Users Only by Mods Only by Admins Only by Developers
Results	Posts Threads
Action	[ Simple ]