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Recent activity by neha.i

2 answers
1
ISI2015-MMA-7
Suppose $X$ is distributed as Poisson with mean $λ.$ Then $E(1/(X + 1))$ is $\frac{e^{\lambda }-1}{\lambda }$ $\frac{e^{\lambda }-1}{\lambda +1}$ $\frac{1-e^{-\lambda }}{\lambda}$ $\frac{1-e^{-\lambda }}{\lambda + 1}$
Suppose $X$ is distributed as Poisson with mean $λ.$ Then $E(1/(X + 1))$ is $\frac{e^{\lambda }-1}{\lambda }$ $\frac{e^{\lambda }-1}{\lambda +1}$ $\frac{1-e^{-\lambda }}{\lambda}$ $\frac{1-e^{-\lambda }}{\lambda + 1}$
asked May 11, 2017 in Probability 1.2k views
1 answer
2
ISI 2016 PCB C5
What will be the output of the following C program? If you think it will give a runtime error, you need to mention it. In either case, your answer must include proper justifications without which no credit will be given. #include<stdio.h> main() { unsigned char i, j, a[] = {1, 2, 3, 4, 5} ... j, n); while(j-- != 0) a[0] += n; printf("j = %d, a[0] = %d\n", j, a[0]); }
What will be the output of the following C program? If you think it will give a runtime error, you need to mention it. In either case, your answer must include proper justifications without which no credit will be given. #include<stdio.h> main() { unsigned char i, j, a[] = {1, 2, 3, 4, 5}; int n; i = j = n = ... %d\n", i, j, n); while(j-- != 0) a[0] += n; printf("j = %d, a[0] = %d\n", j, a[0]); }
answer selected May 9, 2017 in Others 221 views
2 answers
3
ISI 2016 PCB C4
Commodity items have some positive or negative changes in their prices each week. Each trading company picks a portfolio of com- modity items, that is, they have one or more items and they own some non-zero quantity of each one. The database table for this ... other items and there exists at least one company selling that item only (i.e., not selling any other item) in that week
Commodity items have some positive or negative changes in their prices each week. Each trading company picks a portfolio of com- modity items, that is, they have one or more items and they own some non-zero quantity of each one. The database table for this problem consists ... other items and there exists at least one company selling that item only (i.e., not selling any other item) in that week
answered May 9, 2017 in Databases 230 views
1 answer
4
ISI Sample Paper Question
Let A be a square matrix such that $A^{3}$ = 0, but $A^{2} \neq 0$. Then which of the following statements is not necessarily true? (A) $A \neq A^{2}$ (B) Eigenvalues of $A^{2}$ are all zero (C) rank(A) > rank($A^{2}$ ) (D) rank(A) > trace(A)
Let A be a square matrix such that $A^{3}$ = 0, but $A^{2} \neq 0$. Then which of the following statements is not necessarily true? (A) $A \neq A^{2}$ (B) Eigenvalues of $A^{2}$ are all zero (C) rank(A) > rank($A^{2}$ ) (D) rank(A) > trace(A)
asked Apr 17, 2017 in Linear Algebra 700 views
1 answer
5
ISI Sample Paper Question
A club with $n$ members is organized into four committees so that each member belongs to exactly two committees and each pair of committees has exactly one member in common. Then $n = 4$ $n = 6$ $n = 8$ $n$ cannot be determined from the given information
A club with $n$ members is organized into four committees so that each member belongs to exactly two committees and each pair of committees has exactly one member in common. Then $n = 4$ $n = 6$ $n = 8$ $n$ cannot be determined from the given information
asked Apr 17, 2017 in Quantitative Aptitude 1.2k views
5 answers
6
ISI 2004 MIII
In how many ways can three person, each throwing a single die once, make a score of $11$ $22$ $27$ $24$ $38$
In how many ways can three person, each throwing a single die once, make a score of $11$ $22$ $27$ $24$ $38$
commented Apr 8, 2017 in Combinatory 1.6k views
1 answer
7
Rosen (relation)
How many relations are there on the set {a, b, c, d} that contain the pair (a, a)?
How many relations are there on the set {a, b, c, d} that contain the pair (a, a)?
answered Mar 31, 2017 in Set Theory & Algebra 130 views
1 answer
8
ISRO 2016 Probability [Mech]
A and B are two candidates appearing for an interview by a company. The probability that A is selected is 0.5 and the probability that both A and B are selected is at most 0.3. The probability of B getting selected is (a) 0.9 (b) 0.3 (c) 0.6 (d) 0.5
A and B are two candidates appearing for an interview by a company. The probability that A is selected is 0.5 and the probability that both A and B are selected is at most 0.3. The probability of B getting selected is (a) 0.9 (b) 0.3 (c) 0.6 (d) 0.5
answered Mar 8, 2017 in Probability 451 views
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