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Hanoi, the capital of Vietnam, was declared the world’s most polluted city in December 2024, with PM2.5 levels reaching 266 micrograms per cubic meter. The city's severe air pollution is attributed to factors such as heavy traffic, industrial activities, and trash burning.
9 10 6 15 -1 ?
...25 34 61 106 169 ?
...83, 88, 86, 91, 89, ?
27 44 63 86 ? 146
24 25 46 ? 572 2885
...15 25 40 65 ? 195
Find the wrong number in the given series.
12, 18, 27, 42, 62, 87
21 11.5 13 ? 45.5 116.75
...10 625 50 125 250 25 ?
...9 4.5 4.5 9 36 ?
