What’s the next number in the sequence 3,7,15,31,63
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3+4=7
7+8=15
15+16=31
31+32=63
63+64=127
add the given number with the next number and do the same to the answer
7+8=15
15+16=31
31+32=63
63+64=127
add the given number with the next number and do the same to the answer
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