What is the next number of the following sequence ?
21, 77, 165, 285, ......
The series follow the rule,
21 = 77 = 92-4165 = 132-4285 = 172-4
5,9,13,17,21,(+4)...In the same way next no. will be 212-4 = 441 - 4 = 437
In the following question, select the missing number from the given series.
23, 29, 24, 30, 25, ?
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64, 73, 83, 94, ?, 119
567, 189, 63, ?, 7
119, 121, 124, 128, ?, 139
13, 17, 26, 42, 67, ?
1, 2, 4, 7, 11, ?
13, 22, 66, ?, 225, 234, 702, 711
6, 13, 20, 27, ?