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If X={8^n -7n-1 : n in N} and Y={49 (n-1...

If `X={8^n -7n-1 : n in N}` and Y={49 (n-1) | n `in` N}, then

A

`X sub Y`

B

`Y sub X`

C

`X=Y`

D

`X nn Y =phi`

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The correct Answer is:
A
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MODERN PUBLICATION-SETS-MCQs LEVEL - II
  1. Let A={(x,y : y=e^x , x in R} , B={(x,y): y=x, x in R} . Then :

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  2. If X={4^n -3n-1 , n in N} and Y={9(n-1), n in N}, then X uu Y is :

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  3. If X={8^n -7n-1 : n in N} and Y={49 (n-1) | n in N}, then

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  4. If the sets A and B are defined as : A={(x,y):y =1/x ,0 ne x in R}, ...

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  5. If A={a,b},B={c,d},C={d,e}, then : {(a,c),(a,d),(a,e),(b,c),(b,d),(b,e...

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  6. Let F1 be the set of parallelograms , F2 the set of rectangles, F3 the...

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  7. Let S=set of points inside the square , T=the set of points inside the...

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  8. Let R be the set of points inside a rectangle of sides a and b with t...

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  9. In a city 20 percent of the population travels by car, 50 per cent tra...

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  10. Consider n(U)=20 , n (A) =12, n(B)=9, n(A nn B) =4, where U is the uni...

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  11. In a class of 60 students, 25 students play cricket and 20 students pl...

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  13. A survey shows that 63% of the people watch at news channel whereas 76...

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  15. From 50 students taking examinations in Mathematics, Physics and Chemi...

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  16. Of the members of three athletic teams in school 21 are in the cricket...

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  17. Suppose A1,A2….,A30 are thirty sets, each having 5 elements and B1,B2,...

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  18. Each set Xr contains 5 elements and each set Yr contains 2 elements an...

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  19. The set ( A uu B uu C) nn (A nn B^c nn C^c)^c nn C^c equals :

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  20. A class has 175 students. The following data shows the number of stude...

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