Các câu hỏi tương tự
2 so tu nhien a va b chia cho m co chung 1 so du ,a> b hoac bang b .chung to rang a=b chia het cho m
hai so tu nhien a va b chia cho m co cung mot so du a>b chung to rang a-b chia het cho m
bai 3 cho p la so nguyen to lon hon 3
A, chung to p co dang 6k+1 hoac 6k+5
B, cho p va 8p-1 la so nguyen to. chung to 8p+1 la hop so
bai 4
A, tim a va b biet rang a.b=320 va BCNN(a,b)=160
B, tim so tu nhien a nho nhat co 3 chu so sao cho khi chia a cho 11 du 5 va chia cho 13 thi du 8
Bai 1 : Viet tap hop A cac so tu nhien lon hon 4 va ko vuot qua 7 bang hai cach .a ) Viet tap hop cac so tu nhien khac 0 va ko vuot qua 12 bang hai cach .b ) Viet tap hop M cac so tu nhien lon hon hoac bang 11 va ko vuot qua 20 bang hai cach .c ) Viet tap hop M cac so tu nhien lon hon 9 ,nho hon hoac bang 15 bang 2 cach .d ) Viet tap hop A cac so tu nhien ko vuot qua 30 bang 2 cach .e ) Viet tap hop B cac so tu nhien lon hon 5 bang 2 cach .f ) Viet tap hop C cac so tu nhien lon hon hoac bang 18...
Đọc tiếp
Bai 1 : Viet tap hop A cac so tu nhien lon hon 4 va ko vuot qua 7 bang hai cach .
a ) Viet tap hop cac so tu nhien khac 0 va ko vuot qua 12 bang hai cach .
b ) Viet tap hop M cac so tu nhien lon hon hoac bang 11 va ko vuot qua 20 bang hai cach .
c ) Viet tap hop M cac so tu nhien lon hon 9 ,nho hon hoac bang 15 bang 2 cach .
d ) Viet tap hop A cac so tu nhien ko vuot qua 30 bang 2 cach .
e ) Viet tap hop B cac so tu nhien lon hon 5 bang 2 cach .
f ) Viet tap hop C cac so tu nhien lon hon hoac bang 18 va ko vuot qua 100 bang 2 cach .
Ai lam nhanh minh se tick cho nha ,minh can gap .
cho6 so tu nhien khac nhau co tong la 50.chung minh rang trong 6 so tu nhien da cho ton tai 3 so co tong lon hon hoac bang 30
cho 2 so tu nhien a va b . khi chia a va b cho cung so 2 thi cung co so du la 1. chung minh rang:(a-b) chia het cho 2
a)Tim cap so tu nhien x,y biet (x-2)(y-3)=5
b)Cho p la so nguyen to lon hon 3.Chung minhh rang: (p-1)(p+1) chia het cho 24
c)Tong cua nam so tu nhien lien tiep co tan cung bang chu so nao?(co giai thich)
LAM NHANH GIUP MINH NHA
hai so tu nhien a va b co uoc chung lon nhat bang 6 so uoc chung cua 2 so tu nhien a va b la
b1 tim so tu nhien lon nhat co 3 chu so biet rang chia cho 5; 7 ; 9 thi co so du lan luot la 2 ; 4 ;6
b2 tim x biet
a ) 2x +3 chia het cho x -1
b)3x+5 chia het cho x+1
b3 chung to rang 3n+4 va 4n +5 la 2 so nguyen to cung nhau vs moi so TN