A pattern of letter arrangements begins with 3steps below. First, continue the pattern for 3 more step:
1.A
2.ABA
3.ABCBA
4.
5.
6.
How many letters are in each step above?
How many letters do you think there will be in step 10?
1.A
2.ABA
3.ABCBA
4.
5.
6.
How many letters are in each step above?
How many letters do you think there will be in step 10?