Work in pairs on the following version of a game called NIM. A nongraphing calculator is needed for each pair.?

36. Work in pairs on the following version of a game called NIM. A nongraphing calculator is needed for each pair. A.Player 1 presses 1 and + or 2 and +. Player 2 does the same. The players take turns until the target number of 21 is reached. The first player to make the display read 21 is the winner.... show more 36.
Work in pairs on the following version of a game called NIM. A nongraphing calculator is needed for each pair.

A.Player 1 presses 1 and + or 2 and +. Player 2 does the same. The players take turns until the target number of 21 is reached. The first player to make the display read 21 is the winner. Determine a strategy for deciding who always wins.
B. Try a game of NIM using the digits 1, 2, 3, and 4, with a target number of 104. The first player to reach 104 wins. What is the winning strategy?
C.Try a game of NIM using the digits 3, 5, and 7, with a target number of 73. The first player to exceed 73 loses. What is the winning strategy?
D.Now play Reverse NIM with the keys 1 and 2. Instead of + , use - . Put 21 on the display. Let the target number be 0. Determine a strategy for winning Reverse NIM.
E.Try Reverse NIM using the digits 1, 2, and 3 and starting with 24 on the display. The target number is 0. What is the winning strategy?
F.Try Reverse NIM using the digits 3, 5, and 7 and starting with 73 on the display. The first player to display a negative number loses. What is the winning strategy?
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