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CSE Doubts
K H Rosen Ex
2
votes
172
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15. a) How many cards must be chosen from a standard deck
of 52 cards to guarantee that at least two of the four
aces are chosen?
b) How many cards must be chosen from a standard deck
of 52 cards to guarantee that at least two of the four
aces and at least two of the 13 kinds are chosen?
c) How many cards must be chosen from a standard deck
of 52 cards to guarantee that there are at least two cards
of the same kind?
d) How many cards must be chosen from a standard deck
of 52 cards to guarantee that there are at least two cards
of each of two different kinds?
asked
Jul 4
in
Combinatory
Sanjay Sharma
172
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answer
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Best answer
a) 50 (the first 48 are all non-aces, the last two has to be aces)
b) 50 for the two aces (from above); for 2 of 13 kinds you need 5 (4 of 1 kind, 1 of second kind); so you need the bigger number which is 50
c) 14 (13 card which is one of each kind, 14th card has to match one of the 13 kinds)
d) 17 (13 card which is one of each kind, 3 more of one kind for a total of 4 cards of one kind, 1 more of any kind)
answered
Jul 7
NedIsakoff
selected
Jul 8
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Sanjay Sharma
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kenneth H rosen 7th ed. Ex- 10.3 q-28
What is the sum of the entries in a row of the adjacency matrix for an undirected graph? For a directed graph?
What is the sum of the entries in a row of the adjacency matrix for an undirected graph? For a directed graph?
asked
Jun 14, 2016
in
Graph Theory
Pinku Kumar Jha
524
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180
views
Asymptotic Notation (Ex 3-4(h))
Let $f(n)$ and $g(n)$ be asymptotically positive functions. Prove or disprove below fact (h) $f(n)+o(f(n))=\Theta(f(n))$ is it true?
Let $f(n)$ and $g(n)$ be asymptotically positive functions. Prove or disprove below fact (h) $f(n)+o(f(n))=\Theta(f(n))$ is it true?
asked
Aug 15, 2018
in
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Ayush Upadhyaya
180
views
asymptotic-notations
2
votes
1
answer
3
329
views
introduction to engineering mathematics volume 3 by h.k. dass
Three machines I,II,III manufacture respectively 0.4,0.5,0.1 of the total production.The percentage of defective items produced by I,II,III is 2,4,1 percent respectively.for an item chosen at random ,what is the probability that it is defective ?
Three machines I,II,III manufacture respectively 0.4,0.5,0.1 of the total production.The percentage of defective items produced by I,II,III is 2,4,1 percent respectively.for an item chosen at random ,what is the probability that it is defective ?
asked
Aug 13, 2017
in
Probability
tajar
329
views
0
votes
0
answers
4
132
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Kenneth H Rosen 7th edition
Please see example 6. l am not getting the mathematical insight. Can anyone please tell how they are arriving at the answer.
Please see example 6. l am not getting the mathematical insight. Can anyone please tell how they are arriving at the answer.
asked
Apr 21, 2019
in
Combinatory
Psnjit
132
views
kenneth-rosen
discrete-mathematics
combinatory
...