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Hello English

2,5,9,19,37,....? Can you solve this

June 10, 2018
Abc
5
Hi, I feel the answer should be 75 not 73. As the series is +1 and -1 in alternate 2*2 = 4 + 1 (5) 5*2=10-1 (9) 9*2=18+1 (19) 19*2=38-1 (37) 37*2=74-1 (73) The last should be 37*2=74+1 (75).
4 Upvotes 0 Downvotes June 11, 2018
1
2x2=4+1=5 5×2=10-1=9 9×2=18+1=19 19×2=38-1=37 37×2=74+1= 75¥
3 Upvotes 0 Downvotes June 10, 2018
0
75 Explanation : (2 x 2) + 1 = 5 (5 x 2) - 1 = 9 (9 x 2) + 1 = 19 (19 x 2) - 1 = 37 Similarly,  (37 x 2) + 1 = 75
2 Upvotes 0 Downvotes June 10, 2018
0
75...
3 Upvotes 1 Downvotes June 14, 2018
0
75
1 Upvotes 1 Downvotes August 24, 2018
0
2,5,9,19,37,....? Can you solve this
Hi, I feel the answer should be 75 not 73. As the series is +1 and -1 in alternate 2*2 = 4 + 1 (5) 5*2=10-1 (9) 9*2=18+1 (19) 19*2=38-1 (37) 37*2=74-1 (73) The last should be 37*2=74+1 (75).

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