Posted by Ashley on Monday, October 8, 2007 at 5:53pm.
Could someone please help me out with the data homework? All I need is someone to check my answers. If any are incorrect could you please explain what I did wrong.
1. A student must answer 7 of 10 questions on an exam. How many different sets of
questions can be answered if
a) there are no restrictions?
b) four of the first five questions must be answered?
a) 10C7 = 120 b) 5C4 x 5C3 = 50
2. A pizza can be ordered with any number of 8 different toppings OR with no toppings at
all.
a) Find the number of 4 topping orders available.
b) Find the total number of possible orders.
a) 8C4 = 70 b) 2^8 – 1 = 255
3. How many fivedigit odd numbers can be formed from the digits of the number 5 390
462?
7C5 = 21
21 x 3/7
= 9
4. In the game of poker, each player is dealt a hand of five cards. How many hands contain
a) all hearts?
b) exactly 2 aces?
c) at least one diamond?
d) a full house?
a) 13C5 = 1287
b) 4C2 x 48C3 = 103 776
c) final answer = 2023203
d) 52C3 x 49C2 =
5. A club has 25 members. In how many ways can
a) a committee of 3 members be chosen?
b) the offices of president, vicepresident, secretary, and treasurer be filled?
c) the members from (b) stand in line for a picture if the president and vicepresident
must stand side by side?
a) 25C3 = 2300
b) 25P3 = 13 800
c) 2(2!) = 4
6. In how many ways can 8 boys sit in a row if
a) there are no restrictions?
b) Jimmy and Bobby must be kept apart?
a) 8! = 40 320
b) 8!  2(7!) = 30 240
Thank you so much

Math  Ashley, Monday, October 8, 2007 at 5:59pm
I am sorry I didn't realize it cut off
b) 4C2 x 48C3 = 103 776
c) final answer = 2023203
d) 52C3 x 49C2 = 5.
A club has 25 members. In how many ways can
a) a committee of 3 members be chosen?
b) the offices of president, vicepresident, secretary, and treasurer be filled?
c) the members from (b) stand in line for a picture if the president and vicepresident
must stand side by side?
a) 25C3 = 2300
b) 25P3 = 13 800
c) 2(2!) = 4
6. In how many ways can 8 boys sit in a row if
a) there are no restrictions?
b) Jimmy and Bobby must be kept apart?
a) 8! = 40 320
b) 8!  2(7!) = 30 240
Answer This Question
Related Questions
 Math PLEASE help  Does studying for an exam pay off? The number of hours ...
 Math  Does studying for an exam pay off? The number of hours studied, x, is ...
 Math check and question  x is a binomial random variable. (Give your answers ...
 math  Can someone please help me on these I have look at the examples and done ...
 Science  Please Check My Written Answer  Please help me with the following: ...
 Math  Please Check My Answers  Please help me by checking the following ...
 Science  Please Check My Four Answers  Please help me with the following ...
 Statistics  Does studying for an exam pay off? The number of hours studied, x, ...
 statistics  Does studying for an exam pay off? The number of hours studied, x, ...
 General  Please understand that I am not upset with anyone or whatever I just ...
More Related Questions