\(99^5-98^4+97^3-96^2\)

\(=99^4.99-\left(\overline{....6}\right)+\left(\overline{....3}\right)-\left(\overline{...6}\right)\)

\(=\left(\overline{...1}\right).99-\left(\overline{...6}\right)+\left(\overline{...3}\right)-\left(\overline{...6}\right)\)

\(=\left(...9\right)-\left(...6\right)+\left(...3\right)-\left(...6\right)\)

\(=\left(...0\right)⋮10\)

Mà \(10⋮2,5\)

\(\RightarrowĐFCM\)

200 + 300 + 500 = 1000

ai k mk , mk k lại ~~!

30 boonh hoa nha

bạn tk mk nhé

 mk chắc 100% luôn