Class VII

Three unbiased coins are tossed. What is the probability of getting at most two heads?
  1. 3/4
  2. 1/4
  3. 3/8
  4. 7/8
Median of 7, 6, 4, 8, 2, 5, 11 is
  1. 6
  2. 12
  3. 11
  4. 5
In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?
  1. 1/3
  2. 3/4
  3. 7/19
  4. 8/21
A bag contains 15 balls of which x are red, probability of getting a red ball at random from bag is
  1. x⁄14
  2. x⁄16
  3. x⁄15
  4. 15⁄x
In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?
  1. 1/10
  2. 2/5
  3. 2/7
  4. 5/7
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