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15 December, 07:12

A bag contains 18 blocks numbered from 1 to 18. two blocks are selected from the bag at the same time. let event e = the two numbers differ by 11. how many outcomes are in e?

a. 7

b. 14

c. 28

d. 292

+4
Answers (1)
  1. 15 December, 07:41
    0
    Probable cases are 1, 12 or 2,13 or 3,14 or 4,15, or 5, 16 or 6, 17 or 7,18

    and reverse

    so, total favourable cases = 14
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