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With the French Open about to begin, it’s time for another tennis puzzle.
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A Golden Set
A golden set in tennis occurs when one player wins all 24 points of a set. In the French Open, women play the best two of three sets.
What is the probability of a golden set somewhere in a specified women’s match if each point is determined by flipping a coin?
Combining Rule
In the set of numbers below, 72 and 99 are “combined” to produce 27. Then 27 and 45 are “combined” to produce 18 and so on. The final 7 is not a misprint.
99 45 39 36 28 21
72 27 18 21 x 13 7
What is x?
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Solutions to week 141
The solution to Sudoku Variant is shown below. In Making 8 and 16, 8 = 4.7 + .8 and 16 = (.7 – .2)-4
Making 8 and 16 answer explained:
8 = 4.7 + .8 = 41.5 = (22)1.5 = 23 = 8
16 = (.7 – .2)-4 = .5-4 = 1/.54 = 24 = 16
Recent Weeks
Week 141: Sudoku Variant & Making 8 and 16, solutions to Nick’s Birthday & Burning Ropes
Week 140: Nick’s Birthday & Burning Ropes, solutions to Pondering Productivity & Cornfield Planning
Week 139: Pondering Productivity & Cornfield Planning, solutions to Close to a Quart & Math Party
Week 138: Close to a Quart & Math Party, solutions to Room for One More & End Points
Week 137: Room for One More & End Points, solutions to Sevens and Elevens & Three-Digit Squares
Links to all of the puzzles and solutions are on the Complete Varsity Math page.
Come back next week for answers and more puzzles.