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NDA 2020
Exam
NDA
Year
2020
Subject
Mathematics
Chapter
Probability

NDA 2020 · Mathematics · Probability

What is the probability that February of a leap year selected at...

What is the probability that February of a leap year selected at random, will have five Sundays?

Options

  1. A15\frac{1}{5}
  2. B17\frac{1}{7}
  3. C27\frac{2}{7}
  4. D1

Correct answer

B. 17\frac{1}{7}

Step-by-step solution

Number of days in February, when year is a leap year =29=29 days =4=4 weeks +1 odd day 4 weeks have 4 sundays. Probability that 1 odd day is sunday =17=\frac{1}{7}.
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