If A, B and C are three sets such that A∩B=A∩Cand A∪B=A∪C, then
If S and T are two sets such that S has 21 elements, T has 32 elements, and S∩Thas 11 elements, how many elements does S∪Thave?
Draw appropriate Venn diagram for each of the following:
(i) (A∪B)′, (ii) A′∩B′, (iii) (A∩B)′, (iv) A′∪B′
In a survey of 600 students in a school, 150 students were found to be taking tea and 225 taking coffee, 100 were taking both tea and coffee. Find how many students were taking neither tea nor coffee?
If S and T are two sets such that S has 21 elements, T has 32 elements, and S∩T has 11 elements, how many elements does S∪T have?
In a group of 400 people, 250 can speak Hindi and 200 can speak English. How many people can speak both Hindi and English?