Home
Class 7
MATHS
If mu ={1,2,3,4,5,6,7,8) and A={2,5,8} t...

If `mu` ={1,2,3,4,5,6,7,8) and A={2,5,8} then find n(A)

A

3

B

5

C

4

D

6

Text Solution

Verified by Experts

The correct Answer is:
B
`A'= mu - A`
`A'={1,3,4,6,7}`
`therefore n(A')=5` 1 is the only number which is neither prime nor composite.
Promotional Banner

Topper's Solved these Questions

  • Set theory

    PEARSON IIT JEE FOUNDATION|Exercise Concept Application Level 2|23 Videos

  • Set theory

    PEARSON IIT JEE FOUNDATION|Exercise Concept Application Level 3|19 Videos

  • Set theory

    PEARSON IIT JEE FOUNDATION|Exercise Essay type Question|9 Videos

  • RATIO AND ITS APPLICATIONS

    PEARSON IIT JEE FOUNDATION|Exercise ASSESSMENT TESTS (TEST 2)|12 Videos

  • SIMPLE INTEREST AND COMPOUND INTEREST

    PEARSON IIT JEE FOUNDATION|Exercise Level 3|9 Videos

Similar Questions

Explore conceptually related problems

If U ={1,2,3, 4,5,6,7,8} and A={2,4,6,8} , Find (i) A' (ii) (A')' .

If P=(1,2,3,4,5,6,7) and Q=(2,5,8,9) , then find P-Q.

If U= {1,2,3,4,5,6,7,8,9,10} and A = {1,3,5,7,9} , find A^(c) .

If A={1,2,3,4,5,6,7,8} and B={1,3,5,6,7,8,9}, then A-B={2,4},B-A={9}

If A= {1,2,3,4,5,6} and B= {3,4,5,6,7,8,} , then (A-B) uu(B-A) = …………….

If mu ={0,1,2,3,4,,5,6,7,8,9} X{2,3,5,7} and y={2,5,8} Find n(X' cup Y')

Let A ={1,2,3,4,5,6} and B= {3,4,5,6,7,8} find (A-B)uu(B-A) .

If A DeltaB = {1,2,3,4,5,6,7,8,9,11,13} and B = {4,5,6,8,11,13} then find A.

if U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, B = { 2, 4, 6, 8} and C = {3, 4, 5, 6} then find the value of (B - C)'.