Recent questions in Engineering Mathematics

0 votes
1 answer
8501
A pair of dice is rolled again and again till a total of 5 or 7 is obtained. The chance that a total of 5 comes before a total of 7 is
2 votes
1 answer
8502
Given A and B are matrices such that they can be multiplied.How to prove Rank(AB) ≤ min(Rank(A),Rank(B)) ?
0 votes
1 answer
8503
If R = ((1, 1), (3, 1), (2, 3), (4, 2)), then which of the following represents R2, where R2 is Rcomposite R?(a) ((1,1), (3, 1), (2, 3), (4, 2))(b) ((1, 1), (9, 1), (4, 9...
10 votes
5 answers
8504
How many edges are there in a forest with $v$ vertices and $k$ components?$(v+1) - k$$(v+1)/2 - k$$v - k$$v + k$
1 votes
1 answer
8505
which of the following is wrong?A)group of order is 27 is cyclicB)group of order is 14 is cyclicC)group of order is 21 is cyclic  group of order is 30 is cyclic
1 votes
3 answers
8506
I have applied L'Hospital here. And result came up like this :$$1 - \frac{1}{2} (y^{2} + y)^{-\frac{1}{2}} (2y+1)$$Then after applying limit value , result came as $-\inf...
1 votes
2 answers
8508
let f and g be two functions f :A->B and g: B->C g0f :A->C is surjection  g is injection then f is1)injection2) surjection3)bijection4)none
0 votes
3 answers
8509
0 votes
2 answers
8510
0 votes
3 answers
8513
1 votes
3 answers
8514
Let x be the number obtained from rolling a fair dice and you toss an unbiassed coin X times. What is the probablity that X=5 given that you have obtained 3 heads from X ...
1 votes
2 answers
8515
If X is a continuous random variable whose probability density function is given byf(x) ={k(5x-2x^2) , 0
3 votes
4 answers
8516
X is uniformly distributed random variable that takes values between 0 and 1.The value of E(X^3) will be
0 votes
1 answer
8517
How can you represent the famous poem line, in first order expression"Everybody Loves My Baby, but My Baby Don't Love Nobody but Me" 
5 votes
3 answers
8519
A box contains 10 screws, 3 of which are defective.Two screws are drawn at random with replacement.The probability that none of the two screws is defective will be
0 votes
2 answers
8520
E1 and E2 are events in a probability space satisfying the following constraints p(E1)= p(E2);p(E1U E2) = 1; E1 & E2 are independent then p(E1)=