Question

Find the wrong number in the series.
12, 237, 406, 527, 604, 657

Answer 1

Answer:

604 is the wrong number in the series

12,

12+225=237

237+169=406

406+121=527

527+81=608(but given 604)

608+49=657

so 604 is the wrong number in the series

Answer 2

237-12=225 15^2

406-237=169 13^2

527-406=121 11^2

694-527=77 (it should be 81 9^2)

So, the wrong number is 604.