hai so nguyen to sinh doi la hai so nguyen to hon kem nhau 2 don vi .Tim hai so nguyen to sinh doi nho hon 50
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hai cap so nguyen to hon kem nhau 2 don vi goi la cap so nguyen to sinh doi. tim cac cap so nguyen to sinh doi nho hon 100
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1.Tong (hieu) sau la so nguyen to hay hop soa/5.6.7+8.9 b/5.7.9.11-2.3.7 c/5.7.11+13.17.19 d/4253+14222.Hai so nguyen to sinh doi la hai so nguyen to hon kem nhau 2 don vi.Tim hai si nguyen to sinh doi nho hon 50.3.Cho biet:Neu do tu nhien a(lon hon 1)khong chia het cho moi so nguyen to p ma binh phuong ko vuot qua a(tuc la p2 lon hon hoac bang aĐ thi a la so nguyen to.Dung nhan xet tren cho biet so nao trong...
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1.Tong (hieu) sau la so nguyen to hay hop so
a/5.6.7+8.9 b/5.7.9.11-2.3.7 c/5.7.11+13.17.19 d/4253+1422
2.Hai so nguyen to sinh doi la hai so nguyen to hon kem nhau 2 don vi.Tim hai si nguyen to sinh doi nho hon 50.
3.Cho biet:Neu do tu nhien a(lon hon 1)khong chia het cho moi so nguyen to p ma binh phuong ko vuot qua a(tuc la p2 lon hon hoac bang aĐ thi a la so nguyen to.Dung nhan xet tren cho biet so nao trong cac so 59;121;179;197;217 la so nguyen to?
4.a/So 2009 co la boi cua 41 ko?
b/Tu 2000 den 2020 chi co 3 so nguyen to la 2003;2011;2017.Hay giai thich tai sao cac so le khac trong khoang tu 2000 den 2020 deu la hop so.
5.Goi a=2 . 3 . 4 . 5 . .... . 101. Co phai 100 so tu nhien lien tiep sau deu la hop so ko?
a+2,a+3,a+4,...,a+101.
ai dung kik cho,giup mk nha,ai biet lam bai nao thi lam cung dc,lm het cang tot
Tim cac so nguyen to p de 4p+9 la so nguyen to nho hon 40.
p=2;5;7 vì
4.2+9= 17 la SNT ; 4.5+9=29 la SNT ; 4.7+9= 37 la SNT
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Tim cac so nguyen to p de 4p +9 la so nguyen to nho hon 40.
p =2;5;7 vì 4.2+9=17 là SNT ; 4.5+9 = 29 là SNT ; 4.7+9=37 là SNT
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Tim so nguyen to a de 4a cong 11 la so nguyen to nho hon 30
tim cac so nguyen to a de 4a +11 la so nguyen to nho hon 30
ve truc so nam ngang , chi ra 2 so nguyen co diem bieu dien cach diem -3 mot khoang la hai don vi . sau do ,tim so doi cua hai so nguyen do
dien dung sai
a/tich cua hai so nguyen duong la mot so nguyen duong
b/tich cua hai so nguyen am la mot so nguyen am
c/tich cua 2 so nguyen cung dau luon lon hon moi so do
d/tich cua hai so nguyen khac dau luon nho hon moi so do
e/neu tich hai so nguyen la mot so nguyen duong thi hai so do deu la so nguyen duong
f/neu tich hai so nguyen la mot so nguyen am thi hai so do deu la so nguyen am
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mk học bài này rồi
k mk nha tuy là người sau
cám ơn
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