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Recent questions tagged mathematics
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Previous Gate
The second moment of a Poisson-distributed random variable is 2. The mean of the variable is .... My question on solving we get 2 values of lamda(ie mean) .One is -2 and the other is 1 .So which one to choose?
Kalpataru Bose
asked
in
Mathematical Logic
Nov 23, 2017
by
Kalpataru Bose
3.9k
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mathematics
gate-2015
engineering-mathematics
statistics
probability
poisson-distribution
0
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0
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2
Combination , how to solve ?
How many ways are there to select four pieces of fruit from a bowl containing apples, oranges, and pears if the order in which the pieces are selected does not matter, only the type of fruit and not the individual piece matters, and there are at least four pieces of each type of fruit in the bowl?
hem chandra joshi
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in
Graph Theory
Nov 9, 2017
by
hem chandra joshi
770
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mathematics
1
vote
0
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3
Previous year gate question
For the set N of natural numbers and a binary operation f : N x N → N, an element z ∊ N is called an identity for f, if f (a, z) = a = f(z, a), for all a ∊ N. Which of the following binary operations have an identity? f (x, y) = x + y - 3 f (x, y) = ... xy I have query to option II f(2,7) here a=2 , z=7 so f(2,7)=max(2,7)=2 which is not right ......is my approach right ?
hem chandra joshi
asked
in
Mathematical Logic
Nov 1, 2017
by
hem chandra joshi
231
views
mathematics
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