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Recent questions in Engineering Mathematics
2
votes
5
answers
8521
question on probability
Two aeroplanes I and II bomb a target in succession. The probability of I and II scoring a hit correctly are 0.3 and 0.2 respectively. The second plane will bomb only if the first misses the target.The probability that the target is hit by the second plane ?
Two aeroplanes I and II bomb a target in succession. The probability of I and II scoring a hit correctly are 0.3 and 0.2 respectively. The second plane will bomb only if...
Sonam
2.8k
views
Sonam
asked
Sep 4, 2015
Probability
probability
+
–
1
votes
2
answers
8522
Write equivalent first order expression
There are worms inside some ripe mangoes.
There are worms inside some ripe mangoes.
Sankaranarayanan P.N
524
views
Sankaranarayanan P.N
asked
Sep 3, 2015
1
votes
1
answer
8523
Write Equivalent first order expression
All crows are birds but not all birds are crows.
All crows are birds but not all birds are crows.
Sankaranarayanan P.N
234
views
Sankaranarayanan P.N
asked
Sep 3, 2015
1
votes
1
answer
8524
Write equivalent first-order expression
All ripe mangoes are sweet.
All ripe mangoes are sweet.
Sankaranarayanan P.N
340
views
Sankaranarayanan P.N
asked
Sep 3, 2015
7
votes
1
answer
8525
ISRO2014-19
The number of bit strings of length $8$ that will either start with $1$ or end with $00$ is? $32$ $128$ $160$ $192$
The number of bit strings of length $8$ that will either start with $1$ or end with $00$ is?$32$ $128$ $160$ $192$
ajit
10.4k
views
ajit
asked
Sep 2, 2015
Combinatory
isro2014
combinatory
counting
+
–
0
votes
2
answers
8526
logic
richa07
463
views
richa07
asked
Aug 29, 2015
0
votes
1
answer
8527
why row rank of a matrix is equal to column rank of the matrix ?
suraj
1.0k
views
suraj
asked
Aug 26, 2015
Linear Algebra
matrix
linear-algebra
+
–
1
votes
2
answers
8528
For what value of a, if any, will the following system of equations in x, y and z have a solution?
For what value of a, if any, will the following system of equations in x, y and z have a solution? 2x + 3y = 4, x + y + z = 4, x + 2y – z = a (a) Any real number (b) 0 (c) 1 (d) There is no such value
For what value of a, if any, will the following system of equations in x, y and z have asolution?2x + 3y = 4, x + y + z = 4, x + 2y – z = a(a) Any real number (...
learncp
3.3k
views
learncp
asked
Aug 25, 2015
Linear Algebra
linear-algebra
+
–
0
votes
2
answers
8529
A is a 4-square matrix and A 5 = 0. Then
A is a 4-square matrix and A_5 (a raised to the power of 5) = 0. Then A_4 = a) I b) -I c) 0 d) A
A is a 4-square matrix and A_5 (a raised to the power of 5) = 0. Then A_4 =a) Ib) -Ic) 0d) A
learncp
4.5k
views
learncp
asked
Aug 25, 2015
Linear Algebra
matrix
linear-algebra
+
–
1
votes
1
answer
8530
A be a n-square matrix with integer entries and B = A + 12 I. Then
A be a n-square matrix with integer entries and B = A + 12 I. Then (a) B is idempotent (b) B inverse exist (c) B is nilpotent (d) B inverse is idempotent
A be a n-square matrix with integer entries and B = A + 12 I. Then(a) B is idempotent (b) B inverse exist(c) B is nilpotent (d) B inverse is idempot...
learncp
2.0k
views
learncp
asked
Aug 25, 2015
Linear Algebra
linear-algebra
matrix
+
–
1
votes
2
answers
8531
A is an upper triangular with all diagonal entries zero, then I+A is
A is an upper triangular with all diagonal entries zero, then I+A is (a) invertible (b) idempotent (c) singular (d) nilpotent
A is an upper triangular with all diagonal entries zero, then I+A is(a) invertible (b) idempotent(c) singular (d) nilpotent
learncp
11.2k
views
learncp
asked
Aug 25, 2015
Linear Algebra
linear-algebra
matrix
+
–
1
votes
2
answers
8532
Let Mn×n be the set of all n-square symmetric matrices and the characteristics polynomial of each A∈Mn×n is...
learncp
3.1k
views
learncp
asked
Aug 25, 2015
Linear Algebra
linear-algebra
matrix
+
–
1
votes
1
answer
8533
If A={1,2} then P(A) INTERSECTION P(P(A)) =? where P(A) is power set of A.
Vaijenath Biradar
2.7k
views
Vaijenath Biradar
asked
Aug 22, 2015
1
votes
1
answer
8534
Series Convergence
I'm having hard time understanding how following series converges ; 1 + 2/5 + 3/5^2 + 4/5^3 + 5/5^4 + ............ infinity
I'm having hard time understanding how following series converges ; 1 + 2/5 + 3/5^2 + 4/5^3 + 5/5^4 + ............ infinity
vishal8492
558
views
vishal8492
asked
Aug 22, 2015
Linear Algebra
number-series
+
–
10
votes
3
answers
8535
ISRO2014-37
The probability that two friends are born in the same month is ____ ? $1/6$ $1/12$ $1/144$ $1/24$
The probability that two friends are born in the same month is ____ ?$1/6$$1/12$$1/144$$1/24$
ajit
7.3k
views
ajit
asked
Aug 15, 2015
Probability
probability
isro2014
+
–
1
votes
2
answers
8536
Null Matrix
$X$ and $Y$ are non zero square matrices of order $n \times n$, such that $XY=O$ Then, which of the following options is correct? $|X| = 0$ and $|Y| \neq 0$ $|X| \neq 0$ and $|Y| = 0$ $|X| = 0$ and $|Y| = 0$ $|X| \neq 0$ and $|Y| \neq 0$
$X$ and $Y$ are non zero square matrices of order $n \times n$, such that $XY=O$Then, which of the following options is correct?$|X| = 0$ and $|Y| \neq 0$$|X| \neq 0$ and...
Pooja Palod
1.2k
views
Pooja Palod
asked
Aug 9, 2015
2
votes
1
answer
8537
Diagonal Matrices
If diagonal matrix is commutative with every matrix of same order then it is necessarily 1)scalar matrix 2)unit matrix 3)symmetric matrix 4)zero matrix
If diagonal matrix is commutative with every matrix of same order then it is necessarily1)scalar matrix2)unit matrix3)symmetric matrix4)zero matrix
Pooja Palod
1.5k
views
Pooja Palod
asked
Aug 9, 2015
0
votes
2
answers
8538
Matrices
If AB=BA then which of following are true? 1)(A+B)(A-B)=A^2-B^2 2)(AB)^n=A^n B^n 3)AB^n=B^n A 4)A=I or B=I
If AB=BA then which of following are true?1)(A+B)(A-B)=A^2-B^22)(AB)^n=A^n B^n3)AB^n=B^n A4)A=I or B=I
Pooja Palod
962
views
Pooja Palod
asked
Aug 9, 2015
3
votes
1
answer
8539
Express & form negation so that no negation is to the left of the quantifier & express this negation in simple English
Express and form negation, so that no negation is to the left of the quantifier and express this negation in simple English.$$\unicode{x201C} {\small \text{Every student ...
Shipra Chauhan
694
views
Shipra Chauhan
asked
Aug 1, 2015
Mathematical Logic
mathematical-logic
+
–
1
votes
3
answers
8540
Calculate the limit
$\lim_{x \to 0} \frac{\cos(x)-\log(1+x)-1+x}{\sin^2x} = ? $ Please explain the steps also
$$\lim_{x \to 0} \frac{\cos(x)-\log(1+x)-1+x}{\sin^2x} = ? $$Please explain the steps also
Salman
890
views
Salman
asked
Aug 1, 2015
Calculus
calculus
limits
+
–
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