Wednesday, 31 December 2014

Make a Sequence



      What are the next two terms of the sequence?
1, 1, 5, 17, 61,217………………

Answer:   773, 2753: In this sequence we have to try all the combinations of mathematical operations we know until we find the order which satisfies the sequence. The order in this case is:
Tn= 3 Tn- 1 + 2 Tn -2
T₇ = 3x 217 + 2 x 61 = 773

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