We are given this information and the puzzle is to find the pattern of how these given statements can all be true.
$1+~~4=~~~~5$
$2+~~5=~~12$
$3+~~6=~~21$
$8+11=201$
Good luck!
Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It only takes a minute to sign up.
Sign up to join this communityEach answer moves
one numerical base downwards.
So
1 + 4 = 5 (5 in decimal = 5 in base 6)
2 + 5 = 12 (7 in decimal = 12 in base 5)
3 + 6 = 21 (9 in decimal = 21 in base 4)
8 + 11 = 201 (19 in decimal = 201 in base 3)
The first number is
(1 , 2, 3, ....Etc) + Second number (1,2,3,4 .. Etc) = (First number+ First number * second number).
Or for better understanding:
X + Y = (X+XY)