What is a factor tree of 121?

Answer 1

is it 60*2

30*2*2

15*2*2*2

5*3*2*2*2 so the greatest common factor is 2!

OR

.....................121

....................../\

..................11. 11

11 is prime.

(remove the dots)

Answer 2

112

2, 56

2, 2, 28

2, 2, 2, 14

2, 2, 2, 2, 7

Answer 3

1125

5 times 225

5 times 45

5 times 8

2 times 4

2 times 2

2 times 2 times 2 times 5 times 5 times 5

Answer 4

112

56,2

28,2,2

14,2,2,2

7,2,2,2,2

Answer 5

2 and 7