问题描述:
The letters in the puzzle stand for the number 0 to 5.Can you work it out?
a c d b c
+c e d b c
_________
f b a d c
a c d b c
+c e d b d
_________
f b a d c
a c d b c
+c e d b c
_________
f b a d c
a c d b c
+c e d b d
_________
f b a d c
问题解答:
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