Question

FIND THE MISSING NO. IN SERIES ? 3 8 15 ? 61 124

Answer 1

31

3=1*2+1

8=3*2+2

15=8*2-1

31=15*2+1

61=31*2-1

124=61*2+2

answer 31

Answer 2

Answer:

Step-by-step explanation:

3*2=6+2=8

8*2=16-1=15

15*2=30+2=32

32*2=64-3=61

61*2=122+2=124