Q. What is the next term of the geometric sequence?−516, 8, −20
Identify sequence type: Identify the type of sequence.The given sequence has terms that are multiplied by a common ratio r to get from one term to the next. This indicates that it is a geometric sequence.
Determine common ratio: Determine the common ratio r of the sequence.To find the common ratio, divide the second term by the first term: r=−(516)8=8×(−165)=−2.5Similarly, check the ratio with the third and second term: r=8−20=−2.5Since the common ratio is the same for both pairs of terms, the common ratio is confirmed to be −2.5.
Calculate next term: Calculate the next term in the sequence using the common ratio.The next term is found by multiplying the last known term by the common ratio: Next term = −20×(−2.5)=50