Question

Finish the patterns

12, _ , _ , _ , 60
1, 3, 5 , 7, _
9, _, _ ,_, 81
_,_,15,_.20

Answer 1

1. 12 , 24 , 36 , 48 , 60

2. 1, 3, 5, 7, 9

3. 9, 27, 45, 63, 81

4. 1, 2, 15, 16, 20

Explanation:

1. The rule is +12, or add 12.

2. The rule is +2, or add 2.

3. The rule is +18, or add 18.

4. The rule is +1, +13, +1, +4, or add 1, add 13, add 1, add 4.

Answer 2

Explanation:

12, 28, 44, 60

1, 3, 5, 7, 11

9, 25, 49, 81

4, 8, 15, 16, 20