|
Share Thread: Facebook Twitter Google+ |
|
LinkBack | Thread Tools | Search this Thread |
#1
|
|||
|
|||
Probability Question
Find the probability for the following event:
A king, ace, jack of clubs or 10 of diamonds appears in drawing a single card from a well-shuffled ordinary deck of 52 cards. |
#2
|
||||
|
||||
Quote:
4+4+1+1=10 P(A king, ace, jack of clubs or 10 of diamonds)= 10/52 = 5/26
__________________
He that increaseth knowledge increaseth sorrow (Ecclesiastes 1:18) |
#3
|
|||
|
|||
O... now, I get it. I thought the questioner was talking about the king, ace and jack of clubs and 1 10 of diamonds. By the way, in that case, the answer would be 4/52, right?
|
#4
|
||||
|
||||
Yes, in that case it would be 1/13
__________________
He that increaseth knowledge increaseth sorrow (Ecclesiastes 1:18) |
#5
|
|||
|
|||
Statistics Paper 2014
Statistics Paper 2014, Question No. 2
(i) 8! (ii) Every couple is now a single entity. There are 4 total entities. Hence, answer = 4! (iii) All men are now a single entity. Total 5 entities, hence 5! ways. However 4 men can also be made to sit in 4! ways among themselves. Hence, answer = 5!*4! . |
#6
|
|||
|
|||
Correction:
(ii) Every couple is now a single entity. There are 4 total entities. However, within a couple, man and woman may sit in different order. What would be the answer? 4!*(2^4)? |
#7
|
||||
|
||||
Correct
__________________
He that increaseth knowledge increaseth sorrow (Ecclesiastes 1:18) |
#8
|
|||
|
|||
A man invited 5 friends. He was born in April as also all the invited friends. What is the probability that none of the friends was born on the same day of the month as the host?
Lets say the host was born on 1st April. The probability of this is 1/30. Now, none of the friends should have their D.O.B. as 1st April, hence probability of D.O.B. of any one friend is 29/30 as he can be born on any of the remaining 29 days. However, there are 5 friends, hence, (29/30)^5. However, the host can be born on any of the 30 days. Hence, final answer: [(1/30)*(29/30)^5]*30. Correct? |
#9
|
||||
|
||||
Quote:
The probability of five friends sharing their birthday with host, P(H) = (1/30)^5 Probability that none were born on the same day of the month as host = 1 - P(H)
__________________
He that increaseth knowledge increaseth sorrow (Ecclesiastes 1:18) |
#10
|
|||
|
|||
can u refer good book for probability
|
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
General Knowledge For PMS | Miss_Naqvi | PCS / PMS | 135 | Thursday, April 04, 2019 02:42 PM |
Most importan questions for all test | gabolfaiq | SPSC Other Examinations | 50 | Tuesday, July 02, 2013 11:15 PM |
The constitution of the islamic republic of pakistan, 1973[1] | IMTIAZ AHMAD KHAN | Constitutional Law | 0 | Thursday, February 14, 2013 05:40 PM |
Need help: Constitution's questions | rqabutt | Constitutional Law | 11 | Monday, February 07, 2011 11:06 PM |