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Problem 16


Problem 16


Power Digit Sum

215=32768 and the sum of its digits is 3+2+7+6+8=26.

What is the sum of the digits of the number 21000?


幂的数字和

215=32768,而32768的各位数字之和是 3+2+7+6+8=26

21000的各位数字之和是多少?


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