What will come in place of the question mark in the series below?
2, 17, 89, 359, 1079, ?
Ans. 17 = 2 x 6 + 589 = 17 x 5 + 4359 = 89 x 4 + 31079 = 359 x 3 + 2? = 1079 x 2 + 1, i.e. ? = 2159
Which number will fit in '?' place in the following series?
12, 23, 45, 89, ?
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