ساعدووووووووووني

[حاسوبية]

ياهلا فيكم جميعا,,
اخواني انا عندي كم سؤال بالاحصاء ماقدرت احلهم,,
الله يوفقكم محتاجة اليوم للحل ضرووري,,

الله يجزاه كل الخير اللي يساعدني

هذه هي الاسئلة
Exercises 1: A college have 5 math sections ,if we distribute another 4 students to these sections
1_ Find the probability that 2 of them moved to the same section and the other in different sections?

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Exercises 2:` Box contains cards numbered by
{ 1,2,3,4,5,6,7} if you select 3 cards at a time randomly
1_ Find the probability that the sum of the numbers appear is odd
2- If the number 4 appear , find the probability that the sum of the numbers appear is even.
3- Find the probability that one of the selected cards appear number is 4 if you know that the sum of the numbers is even


Exercises 3: A , B are two iid events ,and P (A1) = 5 P (A2) , AC S.
P(A/A1)= 0.2 ,P(A/A2) = 0.3 what is the value of P (A1 /A) ?