Class VII

(23 )2 is equal to
  1. 8
  2. 16
  3. 32
  4. 64
When a dice is thrown, then the probability of getting a number greater than 3 is
  1. 0
  2. 1
  3. 0.5
  4. 0.17
Cube of (-1/3) is
  1. -0.333333333
  2. 0.333333333
  3. -0.037037037
  4. 0.037037037
("a^5" /a³ ) * a² is equal to
  1. a
  2. a^4
Numbers 1 to 20 are written on twenty separate slips (one number on one slip) kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of getting a number less than 15? 
  1. 0.1
  2. 0.2
  3. 0.7
  4. None of these
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