dell Company Numerical Ability Algebra

if (HE)^H=SHE,where the alphabets take the values from (0-9) & all the alphabets are single digit then find the value of (S+H+E)?

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dell Other Question

x-1-x=5-then-x-4-3x-3-5x-2-3x-1-x-4-1 If the length of a rectangle is increased by 2 units and width is decreased by 2 units, then its area is increased by 20 sq. unit. If length has been decreased by 2 units and width is decreased by 1 unit, then its area is decreased by 37 sq. unit. The area of the rectangle in sq. unit is.....?