Violympic Toan Vong 7-8

BÀI THI SỐ 2    !"#$ % &  !"#$ % ' () !*+, % -  !"#$ % .  !"#$ % / 0!*12134561!$1789: *;4<:81321% * = !*1>?218>3 @4561!>AB.*C43AB * D ;EF>?G3=H*>?I>GB'.*C43>B * J K5L1; 3F1M*%NBO P QFRST1U1:R@1U"V:)WXY H !*1>?218@3?B.*ZG%4#*<8>+!  C43>GB *[:57:81+,F BÀI THI SỐ 1 Z44\1  " Q 45:57:81 ; "]1"!^_ . & J +, &  !"#$ % `< ' "!+, N++!494\1_ - Q4<:89 !!*1218!%4<:8 !!*14;4<:4561! ! !*149% 4+, . 0F1M* !5L1; % OI&XIP OI&XIXHXP OI&XIXHP OIXHXP / 0a1 "]1 `<+, = Q1M* !5L1; % `< D U"F"! ! % J Q @; "]1 H [7 @\1Z"#$KB %  I 4+, BÀI THI SỐ 2   !*1>?218>@">B&H*X C43? *QF4b%* c4*<E+,F & !*1>?3>?B-*X>BD* GM!*1>?"]1  ' !*1>?218>@"?BD*X>BD*C43 QF+,4134b%* c44< - 0 . \1Z !"#$KB % /  !"#$ % = Q1M*19^ !5L1; % D  !"#$ % J !*1>?218>@4561!>A?A?BJ*XAB/*C43 QF +,4134b%*c44< H !*1>?3?BJ*X C43> *[4b%*c 4E+,F$)