Question

complete the pattern and find the rule. 1'3,6,10,15' _ ,_ ,_ , _, 1,2,4,8,16, _ , _, _ ,_

Answer 1

a.) 21, 28, 36, 45
the pattern is start with adding by 2 then, 3, then 4, then 5, 6, 7, 8. 9

 32, 64, 128, 256
the pattern is to multiply by 2