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Questions by learner_geek

1 votes
0 answers
1
aptitute
The no. of ways to distribute n items among r people where each gets zero or more items. please give the detailed formula for this or give any good example.
The no. of ways to distribute n items among r people where each gets zero or more items. please give the detailed formula for this or give any good example.
0 votes
0 answers
3
probability
Probability density function of a random variable X is distributed uniformly between 0 and 10 The probability that X lies between 2.5 to 7.5 and the mean square value of X are respectively. please give step by step answer in a detailed manner.
Probability density function of a random variable X is distributed uniformly between 0 and 10 The probability that X lies between 2.5 to 7.5 and the mean square value of ...
2 votes
3 answers
4
probability
In a lottery, 10 tickets are drawn at random out of 50 tickets numbered from 1 to 50. What is the expected value of the sum of numbers on the drawn tickets?
In a lottery, 10 tickets are drawn at random out of 50 tickets numbered from 1 to 50. What is the expected value of the sum of numbers on the drawn tickets?
3 votes
1 answer
5
probability
A player tosses two fair coins. He wins rs 2 if 2 heads occur and rs 1 if 1 head occurs. On the other hand, he loses rs 3 if no heads occur. if the player plays 100 times.then the amount he wins______________(RS).
A player tosses two fair coins. He wins rs 2 if 2 heads occur and rs 1 if 1 head occurs. On the other hand, he loses rs 3 if no heads occur. if the player plays 100 times...
0 votes
1 answer
6
probability
Let X and Y be two exponentially distributed and independent random variables with mean α and β, respectively. If Z = max (X, Y), then the mean of Z is…. please explain in detail… https://gateoverflow.in/3676/gate2004-it-33 for min(X, Y) solution is already given as question asked in gate 2004. what about max(X, Y).
Let X and Y be two exponentially distributed and independent random variables with mean α and β, respectively. If Z = max (X, Y), then the mean of Z is….please explai...
1 votes
1 answer
7
Natural join
My answer is not matching with any of the option.so what is the correct answer
My answer is not matching with any of the option.so what is the correct answer
2 votes
1 answer
9
Relational algebra
Consider the relations r1(P, Q, R) and r2(R, S, T) with primary keys P and R respectively. The relation r1 contains 2000 tuples and r2 contains 2500 tuples. The maximum size of the join r1⋈ r2 is equal to r2⋈ r1 true or false?
Consider the relations r1(P, Q, R) and r2(R, S, T) with primary keys P and R respectively. The relation r1 contains 2000 tuples and r2 contains 2500 tuples. The maximum s...
1 votes
0 answers
10
ER model
If two tables A and B given with relationship table R. Min number of tables possible if below conditions given 1) R is 1:1 2) R is m:n 3)R is 1:m 4)R is m:1 5)total participation of A in R 6)total participation of A and B both in R
If two tables A and B given with relationship table R.Min number of tables possible if below conditions given1) R is 1:1 2) R is m:n3)R is 1:m4)R is m:1 5)total participa...
1 votes
0 answers
11
MadeEasy Test Series: Databases - Transactions
Deadlock prevention(wait-kill && wound-wait) is free from both starvation as well as deadlock? True or false?
Deadlock prevention(wait-kill && wound-wait) is free from both starvation as well as deadlock?True or false?
1 votes
0 answers
12
MadeEasy Subject Test: Databases - Transactions
In below schedule (S) it has cascading abort or not?
In below schedule (S) it has cascading abort or not?
0 votes
1 answer
13
Sql query
Please explain below query step by step and what does it mean?
Please explain below query step by step and what does it mean?
0 votes
0 answers
14
Strict schedule
This is strict schedule or not?
This is strict schedule or not?
0 votes
0 answers
15
Avl tree
After inserting element 15 in below avl tree which rotation need to be implement RR or RL
After inserting element 15 in below avl tree which rotation need to be implement RR or RL
1 votes
1 answer
17
C language
In char p[] = “hello” when size will be allocated at runtime or at compile time?
In char p[] = “hello” when size will be allocated at runtime or at compile time?
0 votes
1 answer
18
aptitute
How many five-digit integers can be possible?[NOTE:- not positive integers]
How many five-digit integers can be possible?[NOTE:- not positive integers]
1 votes
1 answer
19
Asymptotic
which is asymptotically greater n or $2^{logn}$
which is asymptotically greater n or $2^{logn}$
1 votes
0 answers
20
Difference between???
Difference between (log^2) (n) ,log^2 n, log (log(n)) and (log(n)) ^2?
Difference between (log^2) (n) ,log^2 n, log (log(n)) and (log(n)) ^2?
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