Q. Write an explicit formula for an, the nth term of the sequence 150,30,6,….Answer: an=
Identify Pattern: Identify the pattern in the sequence.The sequence is 150,30,6,… Each term is divided by 5 to get the next term. This is a geometric sequence with a common ratio of 51.
Determine First Term: Determine the first term a1 of the sequence.The first term of the sequence is 150.
Find Common Ratio: Determine the common ratio r of the sequence.The common ratio is the factor by which we multiply each term to get the next term. In this case, r=51.
Write Explicit Formula: Write the explicit formula for the nth term of a geometric sequence.The explicit formula for the nth term of a geometric sequence is an=a1⋅r(n−1).
Substitute Values: Substitute the values of a1 and r into the formula.an=150×(51)(n−1).