Series 002

Level 2

If we follow the sequence 1,7,26,63, __ What is the next one?

125 There's no possible answer. 124 126

John Aries Sarza by John Aries Sarza , 26, Philippines

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

1 solution

Aayush Gandhi
May 26, 2014

1, 2^3 - 1 = 7, 3^3 - 1 = 26, 4^3 - 1 = 63, 5^3 - 1 = 124 Easy it is!

2 Helpful 0 Interesting 0 Brilliant 0 Confused

yeah.. Nice one :)

John Aries Sarza - 7 years ago

ok i understood how it has came

Jayanth Varma - 6 years, 10 months ago

I spotted this but there is no way to include your initial term. 1^3 -1=0 not 1 Also looking at the first difference you get: 6, 19, 37. Therefore the second difference is: 13, 18. We could then assume a third difference of 5. This assumption gives a sequence where the 5th term is 123. Therefore I would argue that we can not tell the next term.

Chris Ashley - 4 years, 7 months ago

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...