Question

What is the 20th term of 64,67,70,73,76

Answer 1

Let's analyze the increments for each step of the sequence:

Each step we add 3 to the previous number.

Since we need the 20th, from what we saw, in the 20th term we will have added three 20 times.

So the procedure is: calculate how much is 3 times 20 and then add that to the first term of the sequence.

$3\times20=60$

So we add 60 to the first term to find the 20th term:

$64+60=124$

Answer: 124