Question

What number should be in the blank in the sequence? 7; 17; 37; 77; ___ ; 317

Answer 1

the answer is 157

Explanation:

7 +10= 17

17+20=37

37+40=77

77+80=157

157+160=317

At the beginning you add +10. Every sequence, you need to multiply that number x2. For example: 10 x 2=20...