A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
A four digit number ( with no repetitions) is to be formed from the set of number ( 0,1,2,3,4,5,6,7). Find the probability that the number :
a) is even
anonymous
 3 years ago
A four digit number ( with no repetitions) is to be formed from the set of number ( 0,1,2,3,4,5,6,7). Find the probability that the number : a) is even

This Question is Closed

ParthKohli
 3 years ago
Best ResponseYou've already chosen the best response.0You first find the number of fourdigit numbers that may be formed from the above set.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Think of it this way, pick the numbers from right to left, least significant first.

ParthKohli
 3 years ago
Best ResponseYou've already chosen the best response.0Can you do that? \[8P4 \] But there is something—we can't place a zero.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0the probability is 50 %

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i did 6x6x5x4  7x7x6x5 ?

ParthKohli
 3 years ago
Best ResponseYou've already chosen the best response.0Let's think of slots. _ _ _ _ Four slots. We have 7 choices for the first(there are eight numbers in the set, but we can't place a zero). 7 for the second too(we have a zero with us the second time). 6 for the third. (We already have two numbers filled out of eight). 5 for the fourth. (We have three filled).

ParthKohli
 3 years ago
Best ResponseYou've already chosen the best response.0We multiply \(7 \times 7 \times 6 \times 5 \Longrightarrow 49 \times 30 \)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0yes then? number of even numbers = 6x6x5x4 i that correct

ParthKohli
 3 years ago
Best ResponseYou've already chosen the best response.0First find the number of four digit numbers you could make, then divide that by 2.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0um answer is not 1/2 though

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0every number that ends with a 0,2,4 and 6 is an even number, so if 4 out of 8 digits give you an even number wouldn't that be 50/50?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0@ParthKohli see my post above. Make sense?

ParthKohli
 3 years ago
Best ResponseYou've already chosen the best response.0Yup! That's correct!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0@ParthKohli answer is given as 780/1470 not 735/1470?
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.