Các câu hỏi tương tự
Tinh tong cac so nguyen x,biet
a, -10<x<10
b, -10<x<=10
a,Tim cac so nguyen a,b sao cho a.b=-3
b,tinh tong cac so nguyen x biet: -6<x+2<8
c,tim tat ca cac U(-15)
Tinh tong A + B biet rang A la tong cac so nguyen am le 2 chu so B la tong cac so nguyen duong chan co 2 chu so
1a, cho tap hop A={x la so tu nhien/x=7k+3; k la so tu nhien ;x < hoac = 150}
- hay liet ke cac phan tu cua A tu nho den lon
-tinh tong cac phan tu cua A
b, tim thuong cua mot phep chia biet rang neu them 15 vao so bi chia va them 5 vao so chia thi thuong va so du khong thay doi
c, tim 1so co 2 chu so sao cho
[(a.10+b):b=3b
bai 1
cho tong : S = 5 + 8 + 11 +14 = ....
a) tim so hang thu 100 cua tong
b) tinh tong 100 so hang dau tien
bai 2
cho tong : S = 7 + 12 + 17 + 22 + .......
a) tim so hang thu 50 cua tong
b) tinh tong 50 so hang dau tien
bai 3
tinh tong cua tat ca cac so hang tu nhien x , biet x la so tu nhien co 2 chu so va 12 < x <91
ban nao lam ho minh 3 bai tren voi ma ban nao nao lam ra dau tien minh se tich ngay va lun
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/
a)
tinh (-10)+12+(-14)+16+(-18)+20+(-24)+26+(-2015)+2017
b) tinh
455+(-311)+3789+(-144)
c) tim tong cac so nguyen x biet
a) -4 <x be hon hoac bang 4
b) -7 < hoac bang x < hoac bang 8
c) -9 < x < hoac bang 5
1 . Tìm 2 so tu nhien co tich bang 300 , ƯCLN bang 5 2 . Tim 2 so tu nhien a,b biet a + b 66 , ƯCLN ( a , b ) 6 . Trong do co 1 so chia het cho 5 .3 . Tim cac so tu nhien a,b biet : UCLN(a,b) 5 , BCNN(a , b) 105 Chung minh : a x b UCLN (a,b) x BCNN (a,b)4 . Tim 2 so tu nhien a va b biet : a x b 360 ; BCNN ( a , b ) 605 . Cho a va b la 2 so nguyen to cung nhau , chung minh rang cac so sau cung la 2 so nguyen to cung nhau : a ; a va a +b b ; a^2va a + b c ; a x b...
Đọc tiếp
1 . Tìm 2 so tu nhien co tich bang 300 , ƯCLN bang 5
2 . Tim 2 so tu nhien a,b biet a + b = 66 , ƯCLN ( a , b ) = 6 . Trong do co 1 so chia het cho 5 .
3 . Tim cac so tu nhien a,b biet : UCLN(a,b) = 5 , BCNN(a , b) = 105
Chung minh : a x b = UCLN (a,b) x BCNN (a,b)
4 . Tim 2 so tu nhien a va b biet :
a x b = 360 ; BCNN ( a , b ) = 60
5 . Cho a va b la 2 so nguyen to cung nhau , chung minh rang cac so sau cung la 2 so nguyen to cung nhau :
a ; a va a +b b ; \(a^2\)va a + b c ; a x b va a + b
Giup minh lam cho xong nha , mot nop roi
tinh tong cac so nguyenx,biet:
a-50<x<50