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The first term of an AP is 5, the last t...

The first term of an AP is 5, the last term is 45 and the sum is 400. Find the number of terms and the common difference.

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To solve the problem step by step, we will use the formulas related to Arithmetic Progressions (AP). ### Given: - First term (A) = 5 - Last term (L) = 45 - Sum of the terms (S) = 400 ### Step 1: Use the formula for the sum of an AP ...
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The first term of an A.P. is 5, the last term is 45 and the sum is 400. Find the number of terms and the common difference.

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Knowledge Check

  • The first term of A.P. is 5, the last is 45 and their sum is 400. If the number of terms is n and d is the common differences , then ((n)/(d)) is equal to :

    A
    9
    B
    8
    C
    7
    D
    6

  • The first term of an A.P. is 5 and the last term is 45. If the sum of all the terms in 400. the number of terms is

    A
    20
    B
    8
    C
    10
    D
    16

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