cong vao hoac chia 2 thanh 3 phan sao cho cac phan do lon hon cac so de cho
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
Khong tinh tong cua ba phan so sau, hay chung to rang tong do nho hon 2:
A= 11/ 29+ 9/ 17 + 10/ 19
Giup minh nhe
Khong tinh tong cua 3 phan so sau, hay chung to rang tong do nho hon 2:
A = 11/29 + 9/17 + 10/19
Chung minh rang tong cua mot phan so duong voi so nghich daocua no thi khong nho hon 2
chung minh rang tong cua 1 phan so duong voi so nghich dao cua no ko nho hon 2
Biet rang : BCNN(a,b).UCLN(a,b)
a, BCNN cua hai so la 600, UCLN cua chung nho hon 10 lan BCNN. So thu 1 la 120, tim so thu 2.
b, UCLN cua hai so la 12, BCNN cua chung lon gap 6 lan UCLN . So t 1 la 24, tim so t 2
c, Tong cua hai so bang 60, tong giua UCLN va BCNN cua chung la 84. Tim hai so do.
chung to rang tong sau nho hon 2 A=6/17+9/16+11/34
Chung to rang tong cua cac phan so sau day lon hon 1/2:
S - 1/50+1/51+1/52+ ...... +1/98+1/99
chung to rang tong cua 100 so hang dau tien cua day nho hon 1/4
1/5;1/45;1/117;1/221;1/357;...
Chung minh rang trong 3 so nguyen to lon hon 3 luon co 2 so nguyen to ma tong hoac hieu cua chung chia het cho 12