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23 December, 08:25

If the first three Fibonacci nos. are x1=1, x2=1 and x3=2, what is the least value of n for which xn>60?

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  1. 23 December, 10:15
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    11

    Step-by-step explanation:

    The first 12 terms of the sequence are ...

    1 1 2 3 5 8 13 21 34 55 89 144

    The first term that is greater than 60 is the 11th term, 89.

    n = 11
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