. F DI ,DE,
vmT NAru vA rnno
1. Ki thi Torin Quoc td ldn ddu tiOn di6n ra
vio nam 1959, td chrlc tai Ru-ma-ni v6i 7 nudc
tham gia : Li0n XO, CHDC Dric, Ticp Khic, Ba
Lan, Hung-ga-ri, Bun-ga-ri vh Ru-ma-ni.
2. Dohn Vi6t Nam du thi Toi{n Qudc td ldn
ddu tiOn vdo 7.1974 tai Ec-phudc, CHDC Dric.
C6 18 nudc gdm 140 hoc sinh du thi (trong d6
c6 2 nfr). Kdt qui doin Viet Nam c6 Hodng L€
It/tinh,l6p 10, DII 'liing hop Hi NOi, quO Thira
Thi6n giinh giAi Nhat, \'i Ditilt Hda,l6p 10 DH Su pham He N0i, qu6 Thanh H6a, giAi Nhi, Ddng Hodng Trung,lcrp 10, DH Tdng hqp Hd
NOi, qu€ Nam Dinh, giii Ba, Ta Hdng Qudng,
lop 10, DH Su pham Hi N6i, quO Hd Tay, giii
Ba (trong sd 5 ngudi tham gia). CuOc thi c6 l0 giii Nhdt, 24 gtiti Nhi vd 31 gibi Ba. Mot su
trDng hop lh nim nhy do)n Hoa K! cflng tham gia thi ldn ddu, nhrmg kh6ng c5 giAi Nhat.
3. Viet Nam dd gi)nh duoc tat ci 147 IIu1,
chuong Virng, 68 Huy chuolg Bac, 48 Hu1'
chuong Ddng qua 27 k\ thi (c6 2 ndm nu6c ta
kh6ng du thi l 19'77, 1982 cdn nam 1980
kh6ng td chrlc thi IMO).
4. Nhtrng hoc sinh Vi0t Nam duo. c 2 Huy chuong Vhng To6n Qudc td trong hai ldn thi lI
N gd Bdo Chdu, N gA Ddc Tudh, Ddo Hdi Long.
Nam 2004 niy chring ta ki ni6m 30 nam nghy
Vi0t Nam tham du International Mathematical Olympiad (lMO).
C6c ban duoc giAi thuong cfia CLB :
Ld Ttri Thu Huyin, I I Todn, THPT NguyrSn
Tat Thlnh, YOn B6i ; Nguy€n C6ng Khanh, l}a,
TIIPT Vinh LOc, huy6n Phf LOc, Thira Thi€n - blud;Vil Hdng Phrtc,7C, THCS Tay D0, Vinh
LOc, Thanh H6a.
VKT l: !t l li 6
mirng theiy cfrng hing C d6 gir{ 16 hon 1 Fermat
nta, n6n lai mua m6t hOp. Ba h6p mua trong nghy sau c6 tdng giri tidn bang gi6 ti6n m6t hOp
mua trudc.
Michel dd trd bao nhi€u tidn ?
3. Mua hdng qud hdng. Trong ki nghi dii
ngdy (mOt nam) 6Int6gra, mOt ngudi vd huu dd
mua hdng qu6 hang. Ngdy ddu mua mOt g5i.
Nghy thf hai mua 2 g6i, nghy thrl ba mua ba
g6i... ngdy h6m sau mua hon ngly h6m trudc
m6t g5i, cho ddn t6n ngliy trudc khi ra vd hai tudn 16 thi khOng cbn tidn dd mua nfra. Tdng sd
tidn phii tri m6i ngdy khOng thay ddi. VIL c6
di6u trtng hqp ki la l) sd Fermat chi m6i ngdy dirng bang sd ngiy nghi cta ngudi yd huu.