Class VII

A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?
  1. 10/21
  2. 11/21
  3. 2/7
  4. 5/7
Median of 7, 6, 4, 8, 2, 5, 11 is
  1. 6
  2. 12
  3. 11
  4. 5
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
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
Mode of 12, 17, 16, 14, 13, 16, 11, 14 is
  1. 13
  2. 11
  3. 14
  4. 14 and 16
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