52. The probability that Jake throws a strike is 65%. If he throws ten pitche sin one inning, find the probability that he throws at least seven strikes.
I have no idea... C. 0.5138
58. A regular deck of 52 cards is shuffled and the top 2 cards are dealt face up. Find the odds that both cards are face cards. (Jack, Queen, King)
E. 11/210 (I got B. 11/221... I thought it was 12/52 x 11/51).
OH it says odds, duh! I only need 52 then.
Great test, got 56, missed, 3, skipped 1, for a total of 330, by far my best test ever! (previous best was yesterday, 312 I believe, on TMSCA #6.)
forum.virtualchallengemeets.com
Your connection to the competitive math/science community. (Formerly texasmath.org)
'09 TMSCA #8
3 posts
• Page 1 of 1
'09 TMSCA #8
by nsguy1350 » Sun Feb 12, 2012 1:18 pm
2013 District 1/Region:
NS - 319/355
MA - 340/332
CA - 294/287
SC - 344/292
CS - 212/124 (fail)
NS - 319/355
MA - 340/332
CA - 294/287
SC - 344/292
CS - 212/124 (fail)
- nsguy1350
- Ubiquitous Spammer
- Posts: 1228
- Joined: Fri Jan 27, 2012 4:16 pm
- Location: Dallas, TX
Re: '09 TMSCA #8
by Salvadoramerican » Mon Feb 13, 2012 3:35 pm
binomial theorem (.35x+.65y)^10
expand and add the coeficients of the 8,9,10,11
.35 for misses and .65 for strikes
expand and add the coeficients of the 8,9,10,11
.35 for misses and .65 for strikes
MacArthur HS-Irving
Region 1 5A
Officially retire: It was an honor to compete against Dominic Yurk and his school, Paschal High(I attended Freshmen year there), in Science, gave a good fight.
It was a pleasure to compete with everyone in math thanks guys
Region 1 5A
Officially retire: It was an honor to compete against Dominic Yurk and his school, Paschal High(I attended Freshmen year there), in Science, gave a good fight.
It was a pleasure to compete with everyone in math thanks guys
- Salvadoramerican
- Determined Spammer
- Posts: 171
- Joined: Thu Feb 02, 2012 8:49 am
Re: '09 TMSCA #8
by nsguy1350 » Mon Feb 13, 2012 7:07 pm
Thanks! I figured this one out at school today, and my method was just a longer method than yours. The 89 would work beautifully with this, I guess.
2013 District 1/Region:
NS - 319/355
MA - 340/332
CA - 294/287
SC - 344/292
CS - 212/124 (fail)
NS - 319/355
MA - 340/332
CA - 294/287
SC - 344/292
CS - 212/124 (fail)
- nsguy1350
- Ubiquitous Spammer
- Posts: 1228
- Joined: Fri Jan 27, 2012 4:16 pm
- Location: Dallas, TX
3 posts
• Page 1 of 1
Who is online
Users browsing this forum: No registered users and 3 guests