Tim 2 so co tich bang 6 tong bang 5
Tinh x:4+3=7
Tnh 18_6÷x=12
cho 2 phan so co tong bang -3 va tich bang 12/5 tinh tong cac so ngich dao cua 2 phan so
Cho 2 phan so co tong bang -3 va tich bang 12/5. Tinh tong cac so nghich dao cua 2 phan so do
cho 2 so co tong bang. neu st1 x voi 4 ,st2 chia 0,2 thi 2 tich bang nhau. tim 2 so
1. tim A biet :
A = 1/2 x 1/4 x 1/8 x 1/16 x 1/32 x 1/64 x 1/128 x 1/256 x 1/512 x 1/1024
2. tim chu vi cua 1 hinh vuong biet neu giam canh cua hinh vuong do 5 cm thi dien tich giam di 385 cm2
3. co ba nhieu so co 3 chu so ma moi so deu co mot chu so 0
4. tong so tuoi cua 2 anh em hien nay la 30 tim tuoi em hien nay biet khi tuoi anh bang tuoi em hien nay thi tuoi anh gap tuoi em 2 lan
5. 1 day nha co 40 nha so nha cua 40 nha do danhla cac so lien tiep tang dan tong cac so do la 3560. so nha cua nha cuoi cung la bao nhieu
6. cho hinh tam giac ABC tren canh AB lay diem M, N sao cho AM = 1/3 AB. AN bang 1/4 AC dien tich BMNC la 24 cm2 tinh dien tich ABC
câu 1 dễ:
1/2+1/4+1/8+1/16+...+1/1024
=1-1/2+1/2-1/4+1/4-1/16+...+1/512-1/1024
=1-1/1024
=1023/1024
de ko hoc cong thuc nen moi hoi
neu tui noi dung k nhe
1.Co bn so co 3 chu so chia het cho 2 ma ko chia het cho 3
2.Viet so tu nhien lon nhat co 4 chu so ma tong 4 chu so bang tich 4 chu so
3.Viet so tu nhien lon nhat co 5 chu so ma su dung 3 chu so khac nhau
4.Tinh tong tat ca cac so co 4 chu so chia het cho 2 va 3
5.Co bn so co 4 chu so ma tich 4 chu so do bang 12
Cac ban giai giup minh nha ,minh dang can gap
cho phan so co tong bang -3 va tich bang 12/5 ting tong nghich dao cua 2 phan so do?
Tim 2 so ci tich bang 6 tong bang 5
1.cho hai phan so co tong bang -3 va tich bang 12/5. tinh tong cac nghich daao cua hai phan so do
2.cho hai phan so toi gian a/b va c/d. biet a/b+c/d E z. chung minh /b/=/d/
Cho 3 so co tong bang 465 . Biet dem so thu nhat nhan2 , so thu hai nhan 3 , so thu 3 nhan 5 thi duoc 3 tich bang nhau. Tim so thu 2