Mathematics
Grade10
Easy

Question

What is the common ratio of the given explicit formula of a geometric sequence?
a subscript n end subscript equals 4 open parentheses 5 close parentheses to the power of n minus 1 end exponent

  1. 9    
  2. 4    
  3. 5    
  4. 1    

Hint:

The explicit formula is, a subscript n end subscript equals a subscript 1 end subscript cross times open parentheses r close parentheses to the power of n minus 1 end exponent

The correct answer is: 5


    Using the explicit formula, a subscript n end subscript equals a subscript 1 end subscript cross times open parentheses r close parentheses to the power of n minus 1 end exponent
    So, the common difference of the given sequence is 5.

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