NOTES BLOG NEPAL

1. If n(A) = 40, n(B) = 50 / n(A∩B) = 15, find the value of n(A∪B) 2. n(U) = 80, n(P) = 50, n(Q) = 30  / n(P∩Q) = 10. Draw the Venn diagram to illustrate the above information and find the value of n(P∪Q). 3. If n(A) = 45, n(B) = 65 & n(A∪B) = 85 then a. Find the value of n(A∩B) b. Find the value of n0 (B) c. Show it in venndiagram. 4. A survey conducted shows that 75% like milk and 60% like curd. If they like atleast one of them then] a. Show it in a Venn diagram. b. What percent were there, who like both? c. What was the percent, who like curd only? 5. In survey of 170 girls it was found that 18 girls can neither dance nor can sing, 96 can dance and 69 can sing. By representing these information in a Venn diagram, find the number of girls who can both dance and sing. 6. Out of 100 students, 80 passed in science, 71 in Mathematics, 10 failed in both subjects and 7 didn't appear in an examination. Find the number of students who passed in both subject using venn diagram. 7. In ...

1. Ram can do a work in 9 days and Shyam can do it in 12 days. In how many days, both together, can do the work? 2. A and B can do a work in 30 days and 40 days respectively. In how many days can A and B working together do it? 3. A and B can do a work in 12 days, which A alone can do in 30 days, In how many days B alone can do it ? 4. A and B can do a piece of work in 12 days. B alone can do it in 30 days. Both started the work together but B leaves after 5 days. In how many days is the whole work completed? 5. Mohan and Sohan can do a piece of work in 12 days. Mohan alone can do it in 18 days. Both started the work together, but Mohan left the work after 6 days. How long will Sohan work alone to finish the remaining work? 6. A and B can finish a piece of work in 12 and 18 days respectively. After some days when both start to work together A leaves and B completes the remaining work in6 days. How many days has A worked together befo...