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Let W denote the words in the english ...

Let W denote the words in the english dicitionary define the relation R by `R: {(x,y) in W xxW`I the words x and y have at least one letter in common }Then R is

A

reflexive, symmetric and not transitive

B

reflexive, symmetric and transitive

C

reflexive, not symmetric and transitive

D

not reflexive, symmetric and transitive

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A
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AAKASH SERIES-SETS AND RELATIONS -PRACTICE EXERCISE
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  5. If A={1,2,3,4,5},B ={p,q,r,s} then n(A xxB ) =

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  6. If A={0,1},B={1,2},C={2,3} then (A xx B)nn(A xx C)=

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  7. If aN = {ax : x in N} " then " 3N cap 7N =

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  8. A = {(x,y) : y = 1//x,0 ne x in R} , B = {(x, y) : y = - x, x in R} th...

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  9. If X = {4^(n) - 3n - 1: n in N} " and " Y = {9(n-1): n in N}, where N ...

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  10. Let A={(x,y)//y=e^(x),x in R},B={(x,y)//y=e^(-x),x in R}, then

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  11. The set A={x:x in R,x^(2)=16," and "2x=6} equals

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  12. Let A and B be two sets such that A xx B has 6 elements. If three elem...

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  19. Let L denote the set of all straight lines in a plane. Let a Relation ...

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  20. On the set of integers Z, relation R is defined as ''mRn iff m is a mu...

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