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 January 18th, 2017, 12:32 AM #1 Newbie   Joined: Jan 2017 From: Canada Posts: 2 Thanks: 0 sequence of number Hi Can you help to find the next number for this sequence : 19 13 23 22 27 31...? I have been trying since last week. Thanks
 January 18th, 2017, 02:25 AM #2 Senior Member   Joined: Apr 2014 From: Glasgow Posts: 1,988 Thanks: 646 Math Focus: Physics, mathematical modelling, numerical and computational solutions I think the pattern is: First two terms are 19 and 13. Subsequent odd terms: Add 4 to last odd term Subsequent even terms: Add 9 to last even term The next number in the sequence is the seventh term (and odd term). Therefore the next number is 31, because we add 4 to 27.
 January 18th, 2017, 03:38 AM #3 Member   Joined: Sep 2016 From: India Posts: 88 Thanks: 30 $19, 13,$ Now, add $4$ with $19$ $19+4=23$ $19, 13, 23$ Next, add $9$ with $13$ $13+9=22$ $19, 13, 23, 22$ add $4$ with $23$ $23+4=27$ $19, 13, 23, 22, 27$ add $9$ with $22$ $22+9=31$ $19, 13, 23, 22, 27, 31$ add $4$ with $27$ $27+4=31$ $19, 13, 23, 22, 27, 31, 31,...$ Thus, next number is $31$
 January 18th, 2017, 02:16 PM #4 Newbie   Joined: Jan 2017 From: Canada Posts: 2 Thanks: 0 Thanks... I got it finally.

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