Brain Teasers
What's in a Number?
Complete the sequence:
21, 13, 24, 26, ??
21, 13, 24, 26, ??
Hint
Who needs the decimal system? Sometimes numbers are just slapped together!Answer
48The first digit of each number is the absolute value of the result of subtracting the preceding number's digits from each other (|2-6|=4), and the second number is the sum of the preceding number's digits (2+6=8).
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