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IF THE 6TH TERM OF AN A.P IS 11, AND THE FIRST TERM IS 1. FIND THE COMMON DIFFERENCE?

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3 answers

  1. How did you have 10

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  2. Tn = a + (n-1)d
    1 = a + (1-1)d = a
    11 =a + 5 d = 1 + 5 d
    d =10/5 = 2

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  3. 5+5

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