What will come in place of the question mark (?) in the following number series?
312 231 295 ? 282 257
The series follows a pattern that,
-92, +82, -72, +62, -52
A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
17, 27, 42, 62,?
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130, 450, 970, 1690, ?
4, 18, 48, ?, 180
23, 32, 42, 53, 65, ?
5, 11, 24, 51, ?
28, 35, 49, ? , 98
4, 10, 33, 136, ?
13, 24, 46, 79, ?