# intersection

### There are 30 students in a classroom. Eighteen students read A Wrinkle in Time while 22 children rea

There are 30 students in a classroom. Eighteen students read A Wrinkle in Time while 22 children read The Hobbit. If all children read at least...
Thread by: math_celebrity, Feb 20, 2023, 0 replies, in forum: Calculator Requests

### assume your math class has 10 sophomores and 7 juniors. there are 3 female sophomores and 4 male jun

assume your math class has 10 sophomores and 7 juniors. there are 3 female sophomores and 4 male juniors. what is the probability of randomly...
Thread by: math_celebrity, Jun 18, 2021, 0 replies, in forum: Calculator Requests

### A spinner has 3 equal sections labelled A, B, C. A bag contains 3 marbles: 1 grey, 1 black, and 1 w

A spinner has 3 equal sections labelled A, B, C. A bag contains 3 marbles: 1 grey, 1 black, and 1 white. The pointer is spun and a marble is...
Thread by: math_celebrity, Jun 1, 2021, 0 replies, in forum: Calculator Requests

### Refer to a bag containing 13 red balls numbered 1-13 and 5 green balls numbered 14-18. You choose a

Refer to a bag containing 13 red balls numbered 1-13 and 5 green balls numbered 14-18. You choose a ball at random. a. What is the probability...
Thread by: math_celebrity, Dec 11, 2020, 0 replies, in forum: Calculator Requests

### If set A ={1,2,3,4} and B={2,4,6,8}, what is A intersect B

If set A ={1,2,3,4} and B={2,4,6,8}, what is A intersect B Using our set notation calculator, we get: A intersect B = {2, 4}
Thread by: math_celebrity, Oct 16, 2020, 0 replies, in forum: Calculator Requests

### If n(A)=1200, n(B)=1250 and n(AintersectionB)=320, then n(AUB) is

If n(A)=1200, n(B)=1250 and n(AintersectionB)=320, then n(AUB) is We know that: n(AUB) = n(A) + n(B) - n(AintersectionB) Plugging in our given...
Thread by: math_celebrity, Apr 1, 2020, 0 replies, in forum: Calculator Requests

### Let A and B be independent events with P(A) = 0.52 and P(B) = 0.62. a. Calculate P(A ∩ B).

Let A and B be independent events with P(A) = 0.52 and P(B) = 0.62. a. Calculate P(A ∩ B). With independent events, the intersection probability...
Thread by: math_celebrity, Oct 18, 2019, 0 replies, in forum: Calculator Requests

### (A intersection B) U (A intersection B')

(A intersection B) U (A intersection B') This is the Universal Set U. Everything that isn't A and isn't B is everything else.
Thread by: math_celebrity, Sep 27, 2019, 0 replies, in forum: Calculator Requests

### There are 100 people in a sport centre. 67 people use the gym. 62 people use the swimming pool. 5

There are 100 people in a sport centre. 67 people use the gym. 62 people use the swimming pool. 56 people use the track. 38 people use the gym...
Thread by: math_celebrity, May 19, 2019, 0 replies, in forum: Calculator Requests

### 45 students, 12 taking spanish, 15 taking chemistry, 5 taking both spanish and chemistry. how many s

45 students, 12 taking spanish, 15 taking chemistry, 5 taking both spanish and chemistry. how many students are not taking either? Let S be the...
Thread by: math_celebrity, Apr 12, 2019, 0 replies, in forum: Calculator Requests

### 10 students play tennis, 5 students play soccer, and 4 students play both. How many students are in

10 students play tennis, 5 students play soccer, and 4 students play both. How many students are in the class? We want Tennis + Soccer - Both 10...
Thread by: math_celebrity, Aug 24, 2018, 0 replies, in forum: Calculator Requests

### Out of 53 teachers 36 drink tea 18 drink coffee, 10 drink neither. how many drink both?

Out of 53 teachers 36 drink tea 18 drink coffee, 10 drink neither. how many drink both? Let T be tea drinkers Let C be coffee drinkers Let (T &...
Thread by: math_celebrity, Apr 29, 2018, 0 replies, in forum: Calculator Requests

### A = { 0 , 2 , 4 , 6 , 8 } B = { 0 , 1 , 2 , 3 , 4 , 5 , 6 } C = { 4 , 5 , 6 , 7 , 8 , 9 , 10 } Find

A = { 0 , 2 , 4 , 6 , 8 } B = { 0 , 1 , 2 , 3 , 4 , 5 , 6 } C = { 4 , 5 , 6 , 7 , 8 , 9 , 10 } Find ( A ∪ B ) ∩ C A U B is everything in A and B...
Thread by: math_celebrity, Aug 8, 2017, 0 replies, in forum: Calculator Requests

### A = {1, 3, 5, 7, 9} B = {2, 4, 6, 8, 10} C = {1, 5, 6, 7, 9} A ∩ (B ∩ C) =

A = {1, 3, 5, 7, 9} B = {2, 4, 6, 8, 10} C = {1, 5, 6, 7, 9} A ∩ (B ∩ C) = B ∩ C = {6} A ∩ (B ∩ C) = {} or the empty set
Thread by: math_celebrity, Jul 28, 2017, 0 replies, in forum: Calculator Requests