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17 March, 23:51

Write down in terms of n, an expression for the nth term of the following sequences: 12,10,8,6,4

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  1. 18 March, 03:17
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    The common difference is - 2, so the formula for the nth term is 12-2 (n-1).

    This can be written 12-2n+2=14-2n, so that when n=1, the 1st term is 14-2=12.

    The 5th term is 14-10=4; the 6th is 14-12=2. And so on
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