The sum of the first 65 term of AP is 3900. Find the 334 term.​

The sum of the first 65 term of AP is 3900. Find the 334 term.​

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1 thought on “The sum of the first 65 term of AP is 3900. Find the 334 term.​”

  1. Step-by-step explanation:

    s65 = 3900

    sn = n/2[2a + (n-1)d]

    s65 = 65/2[2a + (65-1)d]

    3900 = 65/2[2a + 64d]

    3900 = 65/2 × 2[a+ 32d]

    3900 = 65[a + 32d]

    3900/65 = a + 32d

    a + 32d = 60

    now, tn = a + (n-1) d

    t334 = a + (334-1) d

    t334 = a+ 333d

    putting the value of a + 32d

    t334 = 60

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