Question

What rule is the sequence 1, 2, 4, 8,... using?

A) start with 1 and then add 1 repeatedly
B) start with 1 and then add multiples of 2 repeatedly
C) start with 1 and then multiply by 2 repeatedly
D)start with 1 and then divided by 2 repeatedly

Answer 1

Hey there!

The first number in the sequence is 1. Adding one repeatedly doesn’t work because 2+1 does not equal 4. Since the numbers are increasing, it would not be D. That leaves B and C. C is correct because you are multiplying by 2 each time. 1 x 2=2. 2 x 2=4. 4 x 2=8.

I hope this helps!