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A number is chosen at random from the set (1 ,2,3 ....,9, 10). What is...

Mathematics
WAEC 1992
A number is chosen at random from the set (1 ,2,3
....,9, 10). What is the probability that the number
is greater than or equal to 7?
  • A. 1/10
  • B. 3/10
  • C. 2/5
  • D. 3/5
  • E. 7/10
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Correct Answer: Option C
Explanation
The given set {1, 2, 3, 4 ...., 9, 10}
(x ≥ 7 ) = 7 7, 8, 9, 10 = 4
Total number of possible outcome = 10
4/10 = 2/5
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts