Find Lost Number

1, 2, 3, ?, ? , 6, 7, ?, 9, ?

IQ Sequence Solver is designed to assist in preparation for IQ Tests and Number Series Tests. With IQ Sequence Solver you can find the next number in a number sequence and analyze many different types of number sequences. IQ Sequence Solver can automatically detect the expression of the number sequence. This version supports number sequences of up to 10 elements in length.

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