Starting at 1, we get the next number by multiplying by 2 or doubling the previous number.
These numbers are also called the powers of 2.
20 = 1
21 = 2
22 = 4
23 = 8
24 = 16
25 = 32
26 = 64
27 = 128
... etc...
The 'powers of 2' are an example of a geometric sequence, where each term after the first is found by multiplying the previous term by a fixed number, called the common ratio. The common ratio is 2.
The 'powers of 2' sequence goes on for ever. It is infinite and grows quickly!
Starting at 1, we get the next number by multiplying by 2 or doubling the previous number.
These numbers are also called the powers of 2.
20 = 1
21 = 2
22 = 4
23 = 8
24 = 16
25 = 32
26 = 64
27 = 128
... etc...
The 'powers of 2' are an example of a geometric sequence, where each term after the first is found by multiplying the previous term by a fixed number, called the common ratio. The common ratio is 2.
The 'powers of 2' sequence goes on for ever. It is infinite and grows quickly!
Let's have a go at some questions now,
Question
/ 10
Preview only, get started for free to complete this activity
Your tutor needs to mark this activity before you continue
Teacher explanation