This riddle has been around for some time on internet platforms such as Instagram, Facebook, and WhatsApp, and many people still argue over what the answer might be, as there are many possibilities. The correct answer is The secret code is 7,4,6,5,8. Let the numbers = a, b, c, d, e Based on 1st clue: e + c = 14 Based on 2nd clue: a = 2b – 1 Based on 3rd clue: d = b + 1 Based on 4th clue: b + c = 10 Based on 5th clue: a + b + c + d + e = 30 All numbers can be represented by b except for e so we need to rewrite equation 1. Substitute c = 10 – b from equation 4 into equation 1. e + (10 – b) = 14 e = b + 4 Substitute a,c,d,e in equation 5 (2b – 1) + b + (10 – b) + (b + 1) + (b + 4) = 30 Solving for b gives 4. Use the other equations to find the values of a,c,d and e.