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CHO A= 1/4+1/5+1/6+1/20+...+ 1/15. CHUNG TO A KHONG LA SO NGUYEN
CAM ON CAC BAN
CHO A= 1/4+1/5+1/6+1/20+...+1/15. CHUNG TO A KHONG LA SO NGUYEN
CAM ON CAC BAN
1. Chung to tong cua 4 so tu nhien lien tiep la 1 so khong chia het cho 4
2. Tim x e N, biet :
a. x3 + 22 . 5 = 28 . 1100
b. 3 x + 2 - 3x +1 = 6100 : 699
cac ban giup minh voi nha !!! cam on nhieu !~ minh se tick cho ~
cho a =1/2^2 +1/2^3 +1/2^4+.....+1/2^100 c/m A khong phai la so tu nhien
CAC BAN GIUP MINH GIAI NHE! AI GIAI DUNG MINH TICH CHO
1, tinh cac gia tri cac bieu thuc sau mot cach hop li; a,27+73-30:(25-10)133.(33+20)-33.(133+20)(15^2015+15^2016):15^20152,tim so nguyen x biet 2x-4-18(x+1)^32713-(x-2)113,nguoi ta to chuc phat qua cho cac em nho nhan dip tet trung thu gom co 133goibanh,80goi keo,170hop mut duoc chia deu vao cac phan qua.nhung khi chia thi thi con thua 13 goi banh ,8goi keo va 2 hop mut khong chia duoc cac phan qua.hoi nguoi ta da phat qua duoc nhieu nhat bao nhieu ban nho4,tren tia ax,ve cac diem b,c sao cho ac...
Đọc tiếp
1, tinh cac gia tri cac bieu thuc sau mot cach hop li;
a,27+73-30:(25-10)
133.(33+20)-33.(133+20)
(15^2015+15^2016):15^2015
2,tim so nguyen x biet
2x-4=-18
(x+1)^3=27
13-(x-2)=11
3,nguoi ta to chuc phat qua cho cac em nho nhan dip tet trung thu gom co 133goibanh,80goi keo,170hop mut duoc chia deu vao cac phan qua.nhung khi chia thi thi con thua 13 goi banh ,8goi keo va 2 hop mut khong chia duoc cac phan qua.hoi nguoi ta da phat qua duoc nhieu nhat bao nhieu ban nho
4,tren tia ax,ve cac diem b,c sao cho ac=4,ab=8.
a,hoi trong 3 diem a,b,c diem nao nam giua 2diem con lai .
b,diem c co phai la trung diem cua doan thang ab khong . vi sao
5, tinh tong a=6+18+36+60+.........+29700+30300
mong cac ban se giup minh nhe ban nao giup minh se like cho nhieu cai va nho co loi giai phep tinh dang hoang nha i love you
.
1)chung to rang so nguyen to p;p>5 khi chia cho 6 chi co the du 1 hoac 5
2)chung minh rang neu p va p+2 la so nguyen to lon hon 3 thi p+1 la mot hop so
cac an giai giup minh minh dang can gap
ai giai nhanh minh tick cho
Tim x biet :
(x + 1) + (x + 2) + (x + 3 )+ ... + (x + 20) = 250
BAI NAY LA BAI SAO DO CAC BAN MINH KHONG BIET LAM CAC BAN GIUP MINH VOI
Cuối HK1 vua qua hs 1 trung duoc xep thanh 4 loai : G,K,TB,Y. Biet so hs Kha la 114 em chiem 38% tong so hoc sinh toan truong .
Tinh :
A, tong so hs toan truong
B, Tinh so hs TB , biet neu chuyen 6 hs tu Y len TB thi hs yeu bang 4% s hs TB
CAC BAN GIAI GIUP MINH NHE. CAM ON CAC BAN
cho a la so nguyen to lon hon 3. chung minh rang (a-1)(a+4) chia het cho 6
giai giup minh minh like cho