The 5th term & 21 st team of a series in A.P are 10 to 42 respectively. Find the 31 st term​

Question

The 5th term & 21 st team
of a series in A.P are
10 to 42
respectively. Find the 31 st term​

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Brielle 1 month 2021-09-16T16:03:47+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-16T16:04:56+00:00

    Answer:

    61

    Step-by-step explanation:

    first term is a and the 5th term be a + 4d 21st term be a + 20d

    a + 4d = 10

    a + 20d = 42

    solving these two equations simultaneously

    a = 1 and d = 2

    so the 31st term is a +30d = 1 + 30*2 = 61

    0
    2021-09-16T16:05:04+00:00

    Answer:

    31st term=62

    Step-by-step explanation:

    given,a+4d=10

    a+20d=42

    by subtracting the above equations we get,

    -16d=-32

    therefore,d=2

    so,a=2

    so,31st term=a+30d

    = 2+30×2

    =62

    Please mark this as brainliest answer

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