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If A={phi}, then n(A)= ....

If `A={phi}`, then `n(A)=` _______.

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The correct Answer is:
1
Given `A={phi}`
So, `n(A)=1`.
Given `A={1, 4, 9, 16, 25}`
`A={x^(2) : x in N, x lt 6}`
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PEARSON IIT JEE FOUNDATION-SETS-VERY SHORT ANSWER TYPE
  1. If A={phi}, then n(A)= .

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  2. The set builder form of A={1, 4, 9, 16, 25} is .

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  3. If A and B are two equivalent sets and n(A)=2016, then n(B)= .

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  4. If phi is an empty set, then n(phi)= .

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  5. The set of prime number which are having more then two factor is a/an ...

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  6. Which of the following is a singleton set ?

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  7. Let A be the set of all triangles in a plane having the sum of three i...

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  8. Which of the following is an infinite set ?

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  9. Which of the following is an empty set ?

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  10. Which of the following collection is not a set ?

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  11. Match the following Column A to Column B

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  12. If a and B are disjoint sets, then n(A uu B)=

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  13. If A={x : x" is prime"} and B={x : x" is even"}, then A nn B=

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  14. If A nn B=phi, then a and B are called sets.

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  15. If A and B are two non-empty sets, then the minimum number of elements...

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  16. If all the elements of set A are present in set B, then A uu B= .

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  17. If n(A)=2016 and n(B)=2017, then the minimum number of elements in A u...

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  18. If A is collection of natural numbers which are less than 2 and B={x :...

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  19. If A={x : x in N, x" is an additive inverse of "2017} and B={x : x in ...

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  20. If A={x : x in N, 2015 lt x lt 2017} B={x : x in N, x+1=2017}, then A-...

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