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...
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...
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...
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...
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}
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...
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...
(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.
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...
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...
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...
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 &...
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...
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
26 students 15 like vanilla 16 like chocolate. 3 do not like either flavour. How many like both vanilla and chocolate Define our people: We have...
P(A U B) = P(A) + P(B) - P(A intersection B) 100 = 72 + 52 - P(A intersection B) P(A intersection B) = 72 + 52 - 100 P(A intersection B) = P(who...
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