Top Brain-Boosting Number Riddles for Adults with Answers

Challenge your mind! These powerful number riddles will boost your brain, test your logic, and enhance your math skills. Solve these tricky puzzles answers included for when you need them!

Riddle: I’m a two-digit number with a tens digit three times my ones digit, less than 50. What am I?
Answer: 42
Riddle: I’m a three-digit number with a digit sum of 6 and product of 6. What am I?
Answer: 123
Riddle: I’m a two-digit number where my tens digit is three more than my ones digit and a multiple of 5. What am I?
Answer: 40
Riddle: I’m one less than a square and one more than a cube. What am I?
Answer: 8
Riddle: I’m a three-digit number with a digit sum of 9 and product of 36. What am I?
Answer: 229
Riddle: I’m both a square and a cube. What am I?
Answer:64
Riddle: I’m a Fibonacci number before 8. What am I?
Answer:5
Riddle: I’m a number that, when multiplied by 9, gives a palindrome. What am I?
Answer: 11
Riddle: I’m the sum of two primes and a prime myself. What am I?
Answer: 5
Riddle: Two fathers and two sons caught 3 fish, one each. How many fished?
Answer: 3
Riddle: I’m a prime past 105. What am I?
Answer: 107
Riddle: I’m 17 times 6. What am I?
Answer:102
Riddle: I’m one more than a square, past 100. What am I?
Answer:101
Riddle: I’m a two-digit number with a digit sum of 9, a multiple of 3. What am I?
Answer:27
Riddle: I’m a prime between 20 and 30. What am I?
Answer: 23
Riddle: I’m a three-digit number with a digit sum of 7, first digit 1. What am I?
Answer:124
Riddle: I’m a multiple of 6 and 9. What am I?
Answer: 18
Riddle: I’m a prime past 65. What am I?
Answer: 67
Riddle: I’m 23 times 3. What am I?
Answer: 69
Riddle: I’m a prime past 71. What am I?
Answer: 73
Riddle: I’m 11 times 7. What am I?
Answer: 77
Riddle: I’m a prime past 77. What am I?
Answer:79
Riddle: I’m 9 squared. What am I?
Answer: 81
Riddle: I’m a prime past 81. What am I?
Answer:83
Riddle: I’m 17 times 5. What am I?
Answer:85