Răspuns :
pai in 7 zile se mananca toate cele 63 bomboane:
ziua 1 3 bomboane
ziua 2 3+2 bomboane
ziua 3 3+2x2 bomboane
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ziua 7 3=2x6 bomboane
ziua 1 3 bomboane
ziua 2 3+2 bomboane
ziua 3 3+2x2 bomboane
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ziua 7 3=2x6 bomboane
Prima zi 63-1-1-1=60
A 2 zi 60-1-2-2=55
a 3 zi 55-1-3-3 = 48
4 zi 48-1-4-4=39
5 zi 39-1-5-5 = 28
6 zi 28-1-6-6=15
7 zi 15-1-7-7=0
A 2 zi 60-1-2-2=55
a 3 zi 55-1-3-3 = 48
4 zi 48-1-4-4=39
5 zi 39-1-5-5 = 28
6 zi 28-1-6-6=15
7 zi 15-1-7-7=0