Page 52 - NUMINO Challenge_B1
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3 Carrie and Iris take turns reading a 50-page book starting from page 1.
On each turn, a player can read up to 6 pages. The person who reads
the 50th page wins and takes the book. Explain the winning strategy. (A
player should read at least 1 page on each turn, and must read the
whole page.)
4 A few dates are crossed out on the calendar below. You and your
friend are taking turns crossing out 1 to 5 days on the calendar. For
example, if you cross out 3 days starting with the 7th, you cross out the
7th, 8th, and 9th. If the person who crosses out the last date loses, what
dates should you cross out on your first turn in order to win?
October
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49Puzzles and Games
On each turn, a player can read up to 6 pages. The person who reads
the 50th page wins and takes the book. Explain the winning strategy. (A
player should read at least 1 page on each turn, and must read the
whole page.)
4 A few dates are crossed out on the calendar below. You and your
friend are taking turns crossing out 1 to 5 days on the calendar. For
example, if you cross out 3 days starting with the 7th, you cross out the
7th, 8th, and 9th. If the person who crosses out the last date loses, what
dates should you cross out on your first turn in order to win?
October
Sun Mon Tue Wed Thu Fri Sat
1 2 34
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
49Puzzles and Games
