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Mystery Numbers
1. Mystery Number:______________
Clue 1: I am a four digit number.
Clue 2: the product of my first and last digit is 12
Clue 3: the second digit is prime
Clue 4: the quotient of the third digit divided by the second is 3.
(answer: 3394)
2. Mystery Number:_______________
Clue 1: I am divisible by 2, 5 and 10
Clue 2: the second digit is a factor of the third
Clue 3: the sum of my digits is 9
Clue 4: I have four digits
Clue 5: The first digit is a factor of every number
(answer: 1260)
3. Mystery Number:_______________
Clue 1: I am a two digit number.
Clue 2: I am a square number
Clue 3: I am divisible by 3 and 9
(answer: 81)
4. Mystery Number:_______________
Clue 1: I am two digits
Clue 2: When you divide me by 5, the remainder is one
Clue 3: One digit is even and the other is odd
Clue 4: The sum of the digits is 9.
(answer: 81)
5. Mystery Number:_______________
Clue 1: One digit is even and the other is odd.
Clue 2: The last digit is a square number.
Clue 3: The sum of the digits is 17
Clue 4: It is a prime number
(answer: 89)
6. Mystery Number:_______________
Clue 1: It has two even digits.
Clue 2: the product of the digits is 24.
Clue 3: the last digit is a square number
Clue 4: The sum of the digits is 10
(answer: 64)
7. Mystery Number:_______________
Clue 1: The number is two-digits
Clue 2: It has one even digit and one odd digit.
Clue 3: The sum of the digits is nine.
Clue 3: The number is a multiple of 9.
Clue 4: four is one of my digits.
Clue 5: Subtract the first digit from the second digit and you get one.
Clue 6: Multiply my digits and the product is 20.
Clue 7: The number is even.
(answer: 54)
8. Mystery Number:_______________
Clue 1: The number is a multiple of nine.
Clue 2: One digit is even and one digit is odd.
Clue 3: It is a composite number.
Clue 4: It is divisible by three.
Clue 5: The first digit is half the second digit.
(answer: 36)
9. Mystery Number:_______________
Clue 1: The number has three digits.
Clue 2: All the digits are even.
Clue 3: The last digit is a square number.
Clue 4: It is divisible by 4 and 2.
Clue 5: The sum of the digits is 8.
Clue 6: One digit is repeated.
(answer: 224)