Question

a box containing cards 11 to 123 a card is drawn at random from the box find probability of getting (a) a square number (b) a multiple of 7

Answer 1

(a) Outcomes(E): 16,25,36,49,64,81,100,121
      Number Of Favourable Outcome = 8
     Total Number Of Outcomes = 123-11=112
      P(E) = 8/112=4/56=2/23
(b) Outcomes(E) = 14,21,28,35,42,49,56,63,70,77,84,91,98,105,112
      Number Of Favourable Outcomes= 15
      P(E)= 15/112
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