Question

3, 7, 15, 31, ?, 127​

Answer 1

Answer:

63

Step-by-step explanation:

3×2+1=7

7×2+1=15

15×2+1=31

31×2+1=63

Answer 2

Answer:

63

Step-by-step explanation:

1. 1+2=3
2. 3+(double of 2 )=3+4=7
3. 7+8=15
4. 15+16=31
5. 31+32=63
6. 63+64=127

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