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Find the probability that a number selected at random from 41…

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Find the probability that a number selected at random from 41 to 56 is a multiple of 9

A. 1/8

B. 2/15

C. 3/16

D. 7/8

QUICK ANSWER…

A

DETAILS…

The probability that a number selected at random from 41 to 56 is a multiple of 9 is = 1/8

Numbers from 41 to 56 = 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, and 56.

Total number occurrence = 16

Numbers that are multiples of 9 (between 41 and 56) = 45, and 54.

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Total number of occurrence of the numbers that are multiples of 9 is = 2

Thus, the probability that a number selected at random from 41 to 56 is a multiple of 9 is = 2/16 = 1/8.

Now for the right answer to the above question:

  1. Option A is correct.
  2. Option B is not correct.
  3. C is incorrect.
  4. D is not the correct answer.

KEY-POINTS…

You may please note these/this:

  • Probability = number of required occurrence /number of possible occurrence.

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/ culled from 2021 JAMB-UTME MATHEMATICS question 25 /

1 Answers

  1. 0 Votes Thumb up 0 Votes Thumb down 0 Votes

    Probability = number of required occurrence /number of possible occurrence.

    Admin - Mar 29, 2022 | Reply


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