self Maths Puzzle

x^y+y^x=136 then the value of x and y are..???

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self Other Question

x^y+y^x=136 thn the value of x and y???? If cos^2theta -sin^2theta=1/3, value of (cos^4theta-sin^4theta+1) is:

(A) 4/3

(B) 5/3