# Questions by Devshree Dubey

1
Please help with this question:- $(\sqrt{243}+3)^x+(\sqrt{243}-3)^x=15^x$.
2
Please can anyone help me how to measure the CPU Performance and everything related with it.
3
Please help to find the time complexity of this loop. void main() { int n; while(n>=1) { n=n-2; } }
4
Which is the best interfacing of IO with the CPU?Please give answer while keeping the following parameters in mind:- 1)Accuracy 2)Speed 3)Time Consumption
1 vote
5
What is the smallest number that when divided by 12, leaves 10, when divided by 16, leaves 14 and when divided by 24, leaves 22 as a remainder?
6
(1-1/3) (1-1/4) (1-1/5)...(1-1/n)=x then the value of x is : a)1/n b)2/n c)2(n-1)/n d)2/n(n+1)
7
The least number of five digits which is exactly divisible by 12,15 and 18 is: a)10080 b)10800 c)18000 d)81000
8
Please help with the following:- 1)How to determine if a graph is bipartite or not? 2)What is meant by ordered pair in case of a directed graph and unordered pair in case of an undirected graph?
9
Please help with the following in Time Complexity. 1)Show that the following order-of-magnitude results hold: a)3n=O(n!) b)(n3 -2n)/(n+1)=theta(n2) c)n3 /log(n+1)=O(n3) but not O(n2) 2)What is wrong with the following argument? x=O(n4),y=O(n2),therefore x/y=O(n2). 3) What is wrong with ... with the following argument? f(n)=O(n2)+O(n), so that f(n)-g(n)=O(n2 )+O(n)-O(n2). Therefore, f(n)-g(n)=O(n)
10
Please can anyone give example of IPC in a local machine.
11
What is the difference between a job,a process and a thread?
12
How to decide which job is I/O bound or CPU bound?
13
Which data structure is used to implement the Process Control Block?
1 vote
14
In how many ways can 12 different books be parceled into 4 packets so that 3 of the packets contain 3 books each and one of them two books atleast, if all the packets have the same destination?
15
Represent the language over ∑={0,1} containing all possible combinations of 0's and 1's but not having two consecutive 0's.
16
Describe in simple English the language represented by the regular expression r=(1+10)*
17
How do we derive a regular expression from a given language?