The next term in a tricky number sequence
Riddle:
What is the next number in the sequence: 8,431; 6,814; 5,431; … ?
Answer:
Answer: 4,814. Explanation: Look at the thousands digits: 8 → 6 → 5 → 4 (decrease by 2, then 1, then 1). Look at the hundreds: 4 → 8 → 4 → alternates between 4 and 8. The tens and ones stay constant at 31. So next is 4,814.