Ø Bài 1*) Tâm có 24 viên bi, muốn xếp vào các túi sao cho số bi ở các túi đều bằng nhau. Hỏi Tâm có thể xếp số bi đó vào mấy túi? (Kể cả trường hợp xếp vào 1 túi)   !"#$%&'$(()**() Ø+ ,-./01#$2$(&/0345&67-#189 7-9&(:&3&17 ;<= -1#$2./0$(&/03 ;= 3.>?.?@&%&.;= -.9>;3()=3 AB;3@#C3=1#$2 AB=3@#C3;1#$2 D-9;3&3&1 Ø Bi 3*) Một lớp học có 42 hc sinh. Hỏi có bao nhiêu cách chia tổ , biết rằng số hc sinh sau khi chia vào các tổ phải bằng nhau và số tổ lớn hơn 3, nhỏ hơn 7 ? 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Liên đội trường cử 120 nam và 84 nữ đi thăm viếng các bà mẹ Việt Nam anh hùng, trường muốn phân phối số nam và số nữ đều vào các nhóm. Hỏi có mấy cách chia nhóm? (trừ cách chia 1 nhóm). Chia được nhiều nhất mấy nhóm ? Ø Bài 7)* Người ta sắp 120 vở , 150 sách và 180 bút đều vào các hộp . Hỏi sắp được nhiều nhất bao nhiêu hộp và khi đó mỗi hộp có bao nhiêu thứ ? 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&(< .!:&3f&&1c.G&M&$05&6#Y(&6u< '!:&XM&$05&6G&&&1#Y(&6u 5ghQi:Z:Qj:Qk7 Bài 1) Số học sinh khối 6 của trường trong khoảng 200 đến 400 . Khi xếp hàng 12 , hàng 15, hàng 18 đều vừa đủ . Tính số học sinh đó ? 6Z!*!"N*+!" 67$d$I l5$d$I 65::$d$X 5$d$5XXXXm8 _ lX (nBN*X!" 5o*!">01N*J%"=Ja"=+;%".D$;OJ<"="OD^OF "=$"=d$"=$3CDL!"$"OD^OF"=)IP3>I!* !"3O"XX Y+5$d$$XppXX 5 5::$d$X 5$d$5XXXXXXXXXmm YXXBX bq:Z 56Q"0!""n"JW"=01!*rB""D8_4!""0h JW"=rB$04!""0hhF`JW"=rB8 7@"!*rB04"0F`JW"=$;OJ<"=!*rB3J%"=N%`"=PdX3O"X rB8 Z!*rBJW"=>04"0+rB 7s%;5$IdXX 5$5XU8888 _dXX l8 (nB04"0F`JW"=rB 5$5XU8888 _dXX l8 (nB04"0F`JW"=rB Bài 2) Người ta mua một số cây về trồng, nếu trồng mỗi hàng 7 cây thì thừa 3 cây, còn nếu trồng mỗi hàng 6 cây, 8 cây hoặc 10 cây thì vừa đủ. Biết số cây đó ít hơn 500. Số cây đó là bao nhiêu? 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Ø+S340$Z&M&U&Hf#@E3& ;6 #<Q0.&&U& ;6 40 1M&$05& ;6 'j& ;6 &.0Ee& ;6 (.<VW> .-'.(&%09.7 '-9.&&(Mfl&:M&$05& ;6 &&17 Y'.(&%0401M&$05& ;6 7 Ø5 6 S3&/&&M&U&H/0E3& ;6 #$/0f=#<-'. (G6GM&$05& ;6 fm& ;6 9&/&$Z4:n& ;6 (G&X.0> Y(G6Go4:[#[# Y(G6Goo4:`#`# Y(G6Go4:[#[# .VW#0&94:&&/&&m& ;6 #3(G6GX.((9$%&6G9/0& ;60 8%& $p&M2T&(G6G9&(7IMX.(7 '!:&F& ;6 X$%&6G&9&/&&K((G^T&]"0. 9$%&6Gq9/&&.0@(&45& ;6 4r] VO>-YQ[[@=[[[[ [[[ -T&6G(Go !F& ;6 X$%&6G>[[<=[[>[<[[[$%&6G Ø5dQ6Z.#0&9.9X"&M&U&H'j& ;6 &U& ;6 $%&6GM& $05& ;6 G&n`#&`#<h:c.X"&s&1`#$`[ #@c.X"&s.=#$;[#<VW> k$#CX"&2T&s6GG&'.(&%0#49$%&&(t& ;6 & ;60 8%& 27 6G&fm& ;6 9#CX"&7 VO>-YQ``[ -`@`[=. ^OF3R8 OPQR` Ø+S39#1M&U&Hf;#@E3& ;6 [#<Q6Z..9#1& &U& ;6 4(2& ;6 M&$05& ;6 'j& ;6 &.0Ee& ;6 E.0<VW> .k3f&&1c.G&M&$05& ;6 7 'Y@9#1.&'.(&%04(2& ;6 M&$05& ;6 7 Y 6 2> ,RT3f&&1c.G&M&$05& ;6 .# ,!K('.-YQ;@[ ,R2E.. ,Y>/0f;>G&M&$05& ;6 -/0f.[>`G&M&$05& ;6 k9#1`[4(2& ;6 M&$05& ;6 Ø+S340$Z&M&U&Hf#@E3& ;6 #<Q0.&&U& ;6 40 1M&$05& ;6 'j& ;6 &.0Ee& ;6 (.<VW> .-'.(&%09.7 '-9.&&(Mfl&:M&$05& ;6 &&17 Y'.(&%0401M&$05& ;6 7 Ø5 6 S3&/&&M&U&H/0E3& ;6 #$/0f=#<-'. (G6GM&$05& ;6 fm& ;6 9&/&$Z4:n& ;6 (G&X.0> Y(G6Go4:[#[# Y(G6Goo4:`#`# Y(G6Go4:[#[# .VW#0&94:&&/&&m& ;6 #3(G6GX.((9$%&6G9/0& ;60 8%& $p&M2T&(G6G9&(7IMX.(7 '!:&F& ;6 X$%&6G&9&/&&K((G^T&]"0. 9$%&6Gq9/&&.0@(&45& ;6 4r] VO>-YQ[[@=[[[[ [[[ -T&6G(Go !F& ;6 X$%&6G>[[<=[[>[<[[[$%&6G 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