Find the missing number of the series: 13, 32, 24, 43, 35, ?, 46, 65, 57, 76
- 45
- 54
- 52
- 55
Explanation
Series: 13, 32, 24, 43, 35, ?, 46, 65, 57, 76
Notice the pattern alternates:
+19, −8, +19, −8, +19, −8, +19, −8, +19
So:
35 + 19 = 54
Then 54 − 8 = 46, which matches.
Missing number = 54
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