20 is.
Chat with our AI personalities
Find the 7th term of the geometric sequence whose common ratio is 1/2 and whose first turn is 5
The 'n'th term is [ 4 - 3n ].
The 'n'th term is [ 4 - 3n ].
It is: 3n+2
Starting with the number 4, applying the rule of multiplying by 2 and then subtracting 3 gives the following sequence: 4, 5, 7, 11, 19, 35. This pattern can be calculated as follows: 4 x 2 - 3 = 5, 5 x 2 - 3 = 7, 7 x 2 - 3 = 11, 11 x 2 - 3 = 19, 19 x 2 - 3 = 35.