Find the rule and fill in the appropriate number in the brackets. (1) 3, 6, 9, 12 (15) (18) (2) 1 Find the rule and fill in the appropriate number in the brackets (1)3 6 9 12 (15) (18) (2)1 2 4 7 ( ) 16

Find the rule and fill in the appropriate number in the brackets. (1) 3, 6, 9, 12 (15) (18) (2) 1 Find the rule and fill in the appropriate number in the brackets (1)3 6 9 12 (15) (18) (2)1 2 4 7 ( ) 16

eleven