Question

what is 1+1.ples explain

Answer 1

1+1 is a mathematical expression that evaluates to:

2 (number) (in ordinary arithmetic)1 (number) (in Boolean algebra with a notation where '+' denotes a logical disjunction, see logical disjunction#Definition)0 (number) (in Boolean algebra with a notation where '+' denotes 'exclusive or' operation, see Boolean algebra#Values, or in a quotient ring of numbers modulo 2)

The terms 1+1, One Plus One, or One and Onemay refer to:11

Answer 2

1+1 is always 2, under any reasonable interpretation of the word "always" and the symbol "2."  It might also equal 0, but it will still equal 2.1+1 is generally read as an arithmetic expression signifying the Addition of the Value One and the Value One.