Question

3,3,9,15,33,63,....?​

Answer 1

Step-by-step explanation:

0, 3, 3, 9, 15, 33, 63, 129, 255, 513, 1023, 2049, 4095, 8193, 16383, 32769, 65535, 131073, 262143, 524289, 1048575, 2097153, 4194303, 8388609, 16777215, 33554433, 67108863, 134217729, 268435455, 536870913, 1073741823, 2147483649 (list; graph; refs; listen; history; text; internal format

Answer 2

Answer:

129

Step-by-step explanation:

3×2+3= 9

9×2-3=15

15×2+3=33

33×2-3=63

63×2+3=129

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