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    Mathematics
    Grade10
    Easy

    Question

    The first term of the sequence a subscript 7 end subscript equals 19 open parentheses fraction numerator 7 over denominator 8 end fraction close parentheses to the power of 3 end exponent is _______.

    1. 3    
    2. 7    
    3. 19    
    4. 8    

    hintHint:

    In a geometric progression, each successive term is obtained by multiplying the common ratio to its
    preceding term. The formula for the nth term of a geometric progression whose first term is a and
    common ratio is r is: an=arn-1.

    The correct answer is: 19

      the given sequence a subscript 7 end subscript equals 19 open parentheses fraction numerator 7 over denominator 8 end fraction close parentheses to the power of 3 end exponent
      In a geometric progression, each successive term is obtained by multiplying the common ratio to its
      preceding term. The formula for the nth term of a geometric progression whose first term is a and
      common ratio is r is: an=arn-1.
      The first term of the sequence is 19.

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