Answer:
88,573
Step-by-step explanation:
Kindly note that the question says 4; maybe the final question was intended to be the probability that he gets exactly 2 of the 4 correct. However. If it is the other way round. This a e procedure used in the solution should also be followed.
Answer:
0.21
Step-by-step explanation:
Number of options = 4
One correct answer per option ; hence, the probability of success, p = 1/4 = 0.25
Using the binomial probability relation :
P(x =x) = nCx * p^x * (1 - p)^(n - x)
x = 2 ; n = 4
p = 0.25 ; 1 - p = 0.75
P(x = 2) = 4C2 * 0.25^2 * 0.75^2
P(x = 2) = 6 * 0.0625 * 0.5625
P(x = 2) = 0.2109375
P(x = 2) = 0.21 (2 decimal places)
Note : if the question was 3, then put, n = 3 instead of 4
Answer:
358
Step-by-step explanation:
Answer:
11/12
Step-by-step explanation:
Nesta questão, estamos interessados em saber em que fração do álbum de figurinhas ambos contribuíram.
Pela pergunta, ficamos sabendo que Karina contribuiu com 1/6 enquanto Cristina contribuiu com 3/4.
Portanto, para encontrar a fração com a qual ambos contribuem, simplesmente adicionamos as duas frações.
Matematicamente, isso seria 1/6 + 3/4 = (2 + 9) / 12 = 11/12
