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1
Sheldon Ross Chapter-2 Question-15b
If it is assumed that all $\binom{52}{5}$ poker hands are equally likely, what is the probability of being dealt two pairs? (This occurs when the cards have denominations a, a, b, b, c, where a, b, and c are all distinct.) my approach is: selecting a ... I'm getting answer 0.095 but in the book answer is given 0.0475 where am I going wrong?
asked
in
Probability
Jun 14, 2019
1.1k
views
probability
sheldon-ross
engineering-mathematics
2
votes
2
answers
2
Virtual Gate Test Series: Operating System - Fork-Join Concurrency Structure
Consider the code fragment: count = 3; S1; Fork L1; L1: S3; S2; goto L3; S4; Fork L2; L2: S6; goto L3; S5; L3: join count S7 Which one of the following represents correct precedence graph of the above code fragment? the answer is given but I’m getting where am I wrong?
asked
in
Operating System
Jun 12, 2019
3.9k
views
operating-system
precedence-graph
fork-system-call
concurrency
virtual-gate-test-series
0
votes
1
answer
3
Sheldon Ross Example-5n
Compute the probability that if 10 married couples are seated at random at a round table, then no wife sits next to her husband 1 wife sits next to her husband. pick one of the 10 couples=$\binom{10}{1}$. These couples can interchange their position such that ... sits together=$\frac{N}{19!}$ so probability that no couple sits together=$1-\frac{N}{19!}$ is this correct?
asked
in
Probability
Jun 11, 2019
5.3k
views
combinatory
probability
discrete-mathematics
sheldon-ross
0
votes
1
answer
4
Follow Set Self Doubt
X->aABe B->c | d A->a What will be the follow of A here? {c, d, $} or {c, d, e, dollar}
asked
in
Compiler Design
Jun 8, 2019
469
views
compiler-design
first-and-follow
1
vote
1
answer
5
ER Model Self Doubt
How to represent referential integrity constraint in ER model? pls explain with diagram
asked
in
Databases
Jun 7, 2019
1.9k
views
er-diagram
databases
er-to-relational
referential-integrity
0
votes
1
answer
6
Stallings 6e Exercise-11.12 (page no.-539) I/O Management RAID
Consider a 4-drive, 200GB-per-drive RAID array. What is the available data storage capacity for each of the RAID levels, 0, 1, 3, 4, 5, and 6?
asked
in
Operating System
Jun 5, 2019
8.9k
views
descriptive
operating-system
file-system
disk
raid
1
vote
2
answers
7
Stallings 6e Exercise-11.10 (page number-539) I/O Management
A 32-bit computer has two selector channels and one multiplexor channel. Each selector channel supports two magnetic disk and two magnetic tape units. The multiplexor channel has two line printers, two card readers, and ten VDT terminals ... reader 1.2 Kbytes/s VDT 1 Kbytes/s Estimate the maximum aggregate I/O transfer rate in this system
asked
in
Operating System
Jun 5, 2019
1.9k
views
descriptive
operating-system
disk
file-system
co-and-architecture
0
votes
1
answer
8
Virtual Gate Test Series: Databases - ER to Relational Model
how many tables are required?
asked
in
Databases
May 28, 2019
1.4k
views
databases
er-to-relational
virtual-gate-test-series
0
votes
0
answers
9
Virtual Gate Test Series: Databases - Schedules
A' is set of all possible schedules 'C' is set of all possible schedules that are guaranteed to produce a correct final result 'S' is the set of all serializable schedules 'P' is the set of all schedules possible under 2-phase locking protocol Which is FALSE? $P\subseteq C$ $S\subset P$ $S\subseteq P$ $P\subset C$
asked
in
Databases
May 28, 2019
1.1k
views
databases
serializability
two-phase-locking-protocol
virtual-gate-test-series
0
votes
1
answer
10
Stallings Book Doubt-Process
Which part of the process image forms the logical address space that is used in paging?
asked
in
Operating System
May 26, 2019
513
views
operating-system
process
paging
virtual-memory
1
vote
2
answers
11
Rosen 7e Exercise-8.5 Question-15 page no-558 Inclusion-Exclusion
How many permutations of the 10 digits either begin with the 3 digits 987, contain the digits 45 in the fifth and sixth positions, or end with the 3 digits 123?
asked
in
Combinatory
May 24, 2019
1.3k
views
discrete-mathematics
kenneth-rosen
inclusion-exclusion
0
votes
2
answers
12
Hasse Doubt
what is the least upper bound of {a, b, c}?
asked
in
Set Theory & Algebra
May 23, 2019
883
views
hasse-diagram
set-theory&algebra
lattice
partial-order
1
vote
3
answers
13
Raghuramkrishnan 3e Exercise 5.1 Question no-5 page no-175 SQL
Class(name, meets_at, room, fid) Faculty(fid, fname, deptid) Find the names of faculty members who teach in every room in which some class is taught
asked
in
Databases
May 18, 2019
1.3k
views
sql
databases
query
1
vote
2
answers
14
Recurrence Relation Self-Doubt
What will be solution of recurrence relation if roots are like this: r1=-2, r2=2, r3=-2, r4=2 is this the case of repetitive roots?
asked
in
Combinatory
May 14, 2019
850
views
relations
recurrence-relation
discrete-mathematics
combinational-circuit
0
votes
0
answers
15
Rosen 7e Exercise 8.2 Questionno-26 page no-525 Recurrence Relation
What is the general form of the particular solution guaranteed to exist of the linear nonhomogeneous recurrence relation $a_n$=$6a_{n-1}$-$12a_{n-2}$+$8a_{n-3}$+F(n) if F(n)=$n^2$ F(n)=$2^n$ F(n)=$n2^n$ F(n)=$(-2)^n$ F(n)=$n^22^n$ F(n)=$n^3(-2)^n$ F(n)=3
asked
in
Combinatory
May 14, 2019
557
views
kenneth-rosen
discrete-mathematics
recurrence-relation
0
votes
0
answers
16
Rosen 7e Exercise-8.2 Question no-23 page no-525 Recurrence Relation
Consider the nonhomogeneous linear recurrence relation $a_n$=$3a_{n-1}$+$2^n$ in the book solution is given $a_n$=$-2^{n+1}$ but I’m getting $a_n$=$3^{n+1}-2^{n+1}$
asked
in
Combinatory
May 13, 2019
651
views
kenneth-rosen
discrete-mathematics
recurrence-relation
1
vote
0
answers
17
First set and follow set self-doubt
why do first sets can have epsilon symbol but follow sets don’t? P.S: I’ve a silly doubt :P
asked
in
Compiler Design
May 12, 2019
1.7k
views
compiler-design
parsing
first-and-follow
0
votes
0
answers
18
Rosen 7e Exercise-9.6 Question no-27 page no-631
What is the covering relation of the partial ordering {(A, B) | A ⊆ B} on the power set of S, where S = {a, b, c}? i'm getting R={(Ф, {a}), (Ф, {b}), (Ф, {c}), (Ф, {a, b}), (Ф, {b, c}), (Ф, {a, c}), (Ф, {a, b, c}), ({a}, {a, b}), ({a}, {a, c}), ({b}, ... b, c}), ({c}, {a, c}), ({c}, {b, c}), ({a, b}, {a, b, c}), ({a, c}, {a, b, c})({b, c}, {a, b, c})
asked
in
Set Theory & Algebra
May 10, 2019
650
views
kenneth-rosen
discrete-mathematics
relations
set-theory&algebra
set-theory
0
votes
1
answer
19
Any good resource for developing concepts on transactions in SQL?
asked
in
Databases
May 9, 2019
461
views
sql
transaction-and-concurrency
databases
0
votes
0
answers
20
Molina Exercise-6.3.1 Question no-f Page no-280 SQL
Product(maker, model, type) PC(model, speed, ram, hd, price) Laptop(model, speed, ram, hd, screen, price) Printer(model, color, type, price) Find the maker(s) of the PC(s) with the fastest processor among all those PC 's that have the ... p where p.speed IN( select max(p1.speed) from PC p1 where p1.ram IN( select MIN(p2.ram) from PC p2)))
asked
in
Databases
May 8, 2019
931
views
ullman
databases
sql
query
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