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Find out the sum of all the numbers up to four digit made by 1, 2, 3 and 4 (repetition are allowed)
E.g. 1+2+3+4+11+12+13+14+21+22+23+24+ …+4441+4442+4443+4444?
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- ans=(4-1)!*(1111)*(1+2+3+4)
- 10 years agoHelpfull: Yes(0) No(0)
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