Các câu hỏi tương tự
chung to rang B=1/2^2+1/3^2+1/4^2+1/5^2+1/6^2+1/7^2+1/8^2<1
ai lam duoc minh tick cho
a, Chung minh rang 5m+3 va 3m+2 la 2 so nguyen biet rang 1 so bang 10 ngen to cung nhau voi m la so nguyen to bat ky.
b,Tim 1 bo ba so nguyen to biet rang 1 so bang 10 phan tram tong cua 3 so can tim
Ai lam nhanh nhat minh tick cho
a)Cho n thuoc N. Chunng minh rang n^2 chia het cho 3 hoac n^2 chia cho 3 du 1
b) Co ton tai n thuoc N de n^2+1=30000.....000000( ko gioi han so 0)
Chung minh rang M= 10^n +18.n-1 chia het cho 27
CAC BAN GIUP MINH VOI MAI LA ,MINH NOP ROI HUUUUUUUUUUU
AI LAM XONG MINH SE TICK CHO
So sanh 2 so A=10^8+2/10^8-1 va B=10^8/10^8-1.
Ai nhanh tay giai dc thi minh tick cho
1.tinh C(1+1/1.3)(1+1/2.4)(1+1/3.5)...(1+1/2014.2016)2.a, so 2^100 viet trong he thap phan co bao nhieu chu sob,Chung to rang neu p la so nguyen to lon hon 3 thi p^2 -1 chia het cho 33.a,tim cac chu so a,b,c khac 0 thoa man abbcab.ac.7b,cho A1/2.(7^2012^2014-3^92^94). chung minh A la so tu nhien chia het cho 5.4.a,chung minh rang ,neu(ab+cd+eg) chia het cho 11 thi abcdeg chia het cho 11b,chung minh rang 10^28+8 chia het cho 72Cac ban nho ai nhanh mink tick nhung phai co du cach lam va loi giai !...
Đọc tiếp
1.tinh
C=(1+1/1.3)(1+1/2.4)(1+1/3.5)...(1+1/2014.2016)
2.
a, so 2^100 viet trong he thap phan co bao nhieu chu so
b,Chung to rang neu p la so nguyen to lon hon 3 thi p^2 -1 chia het cho 3
3.
a,tim cac chu so a,b,c khac 0 thoa man
abbc=ab.ac.7
b,cho A=1/2.(7^2012^2014-3^92^94). chung minh A la so tu nhien chia het cho 5.
4.
a,chung minh rang ,neu
(ab+cd+eg) chia het cho 11 thi abcdeg chia het cho 11
b,chung minh rang
10^28+8 chia het cho 72
Cac ban nho ai nhanh mink tick nhung phai co du cach lam va loi giai !!!!!!!!!!!!!!!!!!!!!!!!!
Tim x biet :
a, |2x+1|-x=5
b, |x-10|10+|x-11|10=1
Trinh bay cach lam ro rang cho minh nhe
Chieu phai nap roi
Ai trinh bay ro rang nhat minh se tick
chung minh rang
a,1/2-1/4+1/8-1/16+1/32-1/64<1/3
Chứng minh rang phan so sau toi gian voi moi n thuộc N
2n+1/2n(n+1)
Lam dung va nhanh nht minh cho 3 tick
Lam dung va nhanh nhi mink cho 2 tich
......................... .......ba mình k cho 1 tick
chung minh rang 1/2-1/4+1/8-1/16+1/32-1/64<1/3