By guessing, the probability of getting at least 6 correct is 62201/9765625 which is approx 0.0064 or 0.64 %
Using the binomial theorem of:
(p + q)^n = Σ nCr p^r q^(n-r) with r = 0, 1, ..., n
Each term gives the probability of r successes P(r) out of n trials: p is the probability of success and q = 1 - p is the probability of failure for each trial; for this question:
p = 1/5
q = 4/5
n = 10
and to get the probability of at least 6, P(≥ 6) is the sum P(6) + P(7) + P(8) + P(9) + P(10) which is:
10C6 p^6 q^4 + 10C7 p^7 q^3 + 10C8 p^8 q^2 + 10C9 p^9 q^1 + 10C10 p^10 q^0
= 210 x (1/5)^6 x (4/5)^4 + 120 x (1/5)^7 x (4/5)^3 + 45 x (1/5)^8 x (4/5)^2 + 10 x (1/5)^9 x (4/5)^1 + 1 x (1/5)^10 x (4/5)^0
= (210 x 1^5 x 4^4 + 120 x 1^7 x 4^3 + 45 x 1^8 x 4^2 + 10 x 1^9 x 4 + 1 x 1^10) x (1/5)^10
= 62201/9765625
≈ 0.0064 = 0.64 %
25
58=390625 There are five choices for each of the questions. To find the total number of ways to answer multiply 5 for each of the eight questions.
Great. A multiple choice question with no choices and we can't see the pictures.
Asking a multiple choice question without providing the choices doesn't really seem fair.
Asking a multiple choice question without providing the choices doesn't really seem fair.
The answer depends on the number of choices available for each question.
64/256
love
It is 0.0033
Well they are independent events so it is the probability of getting a correct answer multiplied by the probability of getting a correct answer on the second question. Short Answer: 1/5 times 1/5=1/25
Not sure what a mulitple choice qustion is but if it is anything like a multiple choice question, it is 1/5 or 20%. I strongly advise you to get a dictionary, learn to spell or use a spell checker.
4/25
You have a 4 percent chance of guessing both answers correctly assuming there is only one correct answer to each question and that you may only answer once per question.
There is 1 right answer out of 5 possible answers, so the probability of guessing it correctly is 1/5 or 20% or 0.2.
That depends on how many questions there are, how many choices are listed for each question, and whether any obviously-stupid answers are included among the choices. If any of those factors changes, then the probability changes. One thing we can guarantee, however, even without knowing any of these factors: If you have studied the subject and know the material, then your probability of getting correct answers increases dramatically.
P = (6!)/(6-4)!4!=15
Multiple choice tests are commonly used in schools because they are efficient for assessing a large number of students quickly. They also help to standardize grading and reduce subjective bias in evaluation. Additionally, they can measure a wide range of knowledge and skills.