48, it should be 58: 1- double it=2. 5- double it=10. 13- double it=26. 29- double it=58.
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1/2 is a rational number
48
48 doesn't belong! 1-2 (+3) 5-10 (+3) 13-26 (+3) 29-48 In each set the 1st number is half of the 2nd exept for the last set.
8 does not belongSequence is to add 1 for the first number, and double the next result, and then add 1 to that result, and double again...Correct Sequence2 (+1) 3 (x2) 6 (+1) 7 (x2) 14 (+1) 15 (x2) 302-3-6-7-8-14-15-30(2+1) = (3 x 2) = (6 + 1) = (7 x 2) = (14 + 1) = (15 x 2) = 30 ....So 8 does not belong in the above series.
The third number is 2 -- the first number is 1, second is 1, next is 1+1=2, then 1+2=3, 2+5=5 etc.