Question

Probability that a leap year will have 53 Friday or 53 Monday, is

• A. 2/7
• B. 3/7
• C. 4/7
• D. None of these

Answer 1

Answer: (C)

4/7

Answer 2

53 Fridays or 53 Mondays are exclusive

P(53 F È 53 M) = P(53F) + P(53M)

= $\frac { 2 } { 7 }$ + $\frac { 2 } { 7 }$= $\frac { 4 } { 7 }$