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Math Help - Number of Terms in an Arithmetic Sequence

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    Number of Terms in an Arithmetic Sequence

    What is the formula for finding the amount of terms in an arithmetic sequence? I know the first term, last term and common difference.
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  2. #2
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    Quote Originally Posted by Viral View Post
    What is the formula for finding the amount of terms in an arithmetic sequence? I know the first term, last term and common difference.
    HI

    It will be T_n=a+(n-1)d

    Where T_n would be your last term , a and d are respectively ur first term and common difference , then solving for n would give you the no of tems.
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