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احتمال اور شماریات

Written by Hassan Raza (Mathematics)

نیٹ · ریاضی · 5 سوالات

نام: ____________________   تاریخ: ____________

  1. What is the mean of the numbers 2, 4, 6, 8, 10?

    • A 5
    • B 6
    • C 30
    • D 7

  2. What is the median of 3, 1, 4, 1, 5?

    • A 1
    • B 3
    • C 2.8
    • D 4

  3. A bag has 3 red and 2 blue balls. Two balls are drawn without replacement. What is the probability that both are red?

    • A 3/5
    • B 9/25
    • C 1/5
    • D 3/10

  4. Events A and B cannot happen together. P(A) = 0.3 and P(B) = 0.4. What is P(A or B)?

    • A 0.58
    • B 0.7
    • C 0.1
    • D 0.12

  5. A fair coin is tossed 3 times. What is the probability of exactly one head?

    • A 1/8
    • B 1/2
    • C 1/4
    • D 3/8

جوابی کلید

1. B, 2. B, 3. D, 4. B, 5. D

  1. The sum is 30 and there are 5 numbers, so the mean is 6.

  2. Arranged in order: 1, 1, 3, 4, 5. The middle value is 3.

  3. P = 3/5 x 2/4 = 6/20 = 3/10.

  4. For mutually exclusive events, P(A or B) = P(A) + P(B) = 0.7.

  5. There are 3 ways to place the head among 8 equally likely outcomes, so the probability is 3/8.