DAY 75

Comment

2 x 5 is the same as 5 + 5.
So, what is 5 + 5 in this system?

Answer

2 x 5 = 4 in this system.

Readers' methods

Gurinder S, Wolverhampton:
I think you do the arithmetic as normal and then if the result is more than 5 you take off 6.
2 x 5 = 10; 10 - 6 = 4; so 4 is the answer.

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