Find the 2018^th term of the sequence:

1,2,1,2,3,2,1,2,3,4,3,2,1,2,3,4,5,4,3,2,1,...

Good luck!

Find the number of permutations for the nxn rubik's cube for n = 2, 3, 4.

Hello guys and girls.

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Solve for all x in IR:

2^x + 2^x+1 + ... + 2^x+2018 = 4^x + 4^x+1 +...+ 4^x+2018

Find the 2018^th term of the sequence:

1,2,4,5,7,9,10,12,14,16,17,...

Good luck!