Class VII

If mean of 6 numbers is 41 than sum of these numbers is
  1. 250
  2. 246
  3. 134
  4. 456
In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:
  1. 21/46
  2. 25/117
  3. 1/50
  4. 3/25
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
What is the range of the following set of data? { 2,5,2,8,45,8,17,9,16}
  1. 43
  2. 45
  3. 15
  4. None of the above
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