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nytrameworc | 17:17 Mon 01st Oct 2007 | Education
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what is the nexxt number in this sequence:
3,7,19,55?
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Avatar Image chrisvaughan
3x - 2 is the formula

so the next would be 3x55 -2 which is 163
17:19 Mon 01st Oct 2007
Avatar Image factor-fiction
Yes 163.
Another way to look at is to look at the differences: +4, +12, +36. Each diffrence is 3 x the previous difference. So next difference will be 36 x 3 =108. So next number is the 55+108=163.
21:37 Mon 01st Oct 2007

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