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AShevel6767
AShevel6767
21.10.2019 • 
Mathematics

1. hannah gives clues about her 6 digit secret number:
clue 1: it is the same number if you read it from right to left.
clue 2: the number is a multiple of 9
clue 3: cross of the first and last digits. the only prime factor of the remaining four digit number is 11.
what is hannah's 6 digit number?
2. the only way that 10 can be written as the sum of four different counting numbers is 1+2+3+4. in how many different ways can 15 be written be written as the sum of 4 different counting numbers? assume the order does not matter.

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