What number should replace the question mark in the following series ? 123, 141, 147, 231, 237,

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19 Oct 2022 Number Series

What number should replace the question mark in the following series ?
123, 141, 147, 231, 237, ?

OPtion

1) 261
2) 273
3) 312
4) 263
5) 321
6) 357
7) 289
8) 339
9) 269
10) None of these

Solution

Number + (Sum of digits of the number)*Unit digit = Next number
123 + (1+2+3)*3 = 141
141 + (1+4+1)*1 = 147
147 + (1+4+7)*7 = 231
231 + (2+3+1)*1 = 237
237 + (2+3+7)*7 = 321
Correct Option 5)

Correct Option: 5 Best Solution (2)