Donald meets 7 beggars on his way through the city. The first one gets half of the cash he is wearing. - The second one gets half of what now is left, etc. - Finally, he has only 50 ears (1/2 crown) on his pocket. - How much money did he initially spend in the city?
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Besvarelse: Oprindeligt havde han 64 kr. med i byen. 7. tigger får: 0.5 rest: 0.5 i alt: 1 6. tigger får: 1 rest: 1 i alt: 2 5. tigger får: 2 rest: 2 i alt: 4 4. tigger får: 4 rest: 4 i alt: 8 3. tigger får: 8 rest: 8 i alt: 16 2. tigger får: 16 rest: 16 i alt: 32 1. tigger får: 32 rest: 32 i alt: 64
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