Question

Two sets A and B are such that n(AUB)=180,n(A'nB)=30 and n(AnB')=50 find n(AnB),n not A and n not B​

Answer 1

Answer:

here, n(A-B)=30, n(AUB)=180, n(AnB)=60

so, n(A)=n(A-B)+n(AnB)

=30+60=90

n(B)=n(AUB)+n(AnB)-n(A)=150

so, n(B)=150

hope it helps you.

Answer 2

Step-by-step explanation:

Draw a line segment PR=7 cm.

2. With 4 cm as radius, draw an arc from P.

3. Similarly, with radius as 6 cm from R, cut the arc just drawn.

4. They will intersect at Q. Join PQ and QR.

5. With 5.5 cm as radius, draw an arc from P. Similarly, with radius as 5 cm from R, cut the arc just drawn.

6. They will intersect at S. Join PS and RS.

7. PQRS is the required quadrilateral.