Only Geniuses Can Solve This Math Puzzle in 10 Seconds

5 × 5 − 5 + 5 ÷ 5 = 21 Explanation (in English and without spacing): AccordingtoPEMDASwemultiplyanddividefirstfromlefttoright:5×5=25and,

5÷5=1.Thenwesubtractandaddfromlefttoright:25−5=20,20+1=21. FinalAnswer:21