Question

163, 159, 155, 151.... What will the 23rd term in this sequence be?

Answer 1

Answer:The answer is 75.

Answer 2

The rule is n-4;
163 - 4 = 159
159 - 4 = 155
155 - 4 = 151
151 - 4 = 147

A quick way to solve this is to mutliply 4 by 23 and subtract the product from the 1st term.

23 x 4 = 92
163 - 92 = 71

The 23rd term is 71.

I hope this helps!