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List of top Logical Reasoning Questions on Sequence and Series asked in BITSAT

A sequence is defined as follows: \( a_1 = 1, a_2 = 2 \), and \( a_n = a_{n-1} + a_{n-2} \) for \( n \geq 3 \). What is the 6th term of the sequence?
Identify the next number in the series: 2, 6, 12, 20, ?