Question

find the missing number in the arithmetic sequence 3,__,__,__, -1, 17

Answer 1

Step-by-step explanation:

3 , 5, 1 , 10 , -1 , 17

3-2 = 1 , 1-2 = -1

3+2 = 5, 5+5 = 10 , 10+7 = 17