Cac ban giup minh giai bai nay voi
Tìm BCNN của 0 và 2005
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\(=1994\times867+\left(1994+1\right)\times133\)
\(=1994\times867+1994\times133+133\)
\(=1994\times\left(867+133\right)+133\)
\(=1994\times1000+133=1994000+133=1994133\)
(Cần sử dụng tính chất phân phối giữa phép nhân và phép cộng
\(a\times\left(b+c\right)=a\times b+a\times c\)
Theo cả hai chiều)
Theo quy luật số hạng thứ 24 của tổng là 48
Tổng của dãy số là:
(48 + 2) x 24 : 2 = 600
Số x là 0+2.(24-1)=46
số số hạng trong dãy số trên là:(46-0):2+1=24
Tổng là:(0+46).24:2=552
=1-1/2+1/2-1/3+1/4-1/5+.......+1/99-1/100
=1-1/100
=99/100
2 k nha bn
1, Ba is a good badminton player .
\(\rightarrow\) He plays badminton well .
2, Lan is a slow runner .
\(\rightarrow\) She runs slowly .
3, Mrs.Thanh is a quick swimmer .
\(\rightarrow\) He swims quickly .
4, Mrs.Vui is a safe cyclist .
\(\rightarrow\) She cycles safely .
5, Lan's father is a careful driver .
\(\rightarrow\) He drives carefully .
6, My mother is a good cook .
\(\rightarrow\) She cooks well .
7, My sister is a beautiful dancer .
\(\rightarrow\) She dances beautifully .
8, Nam and Ba are skillful soccer player .
\(\rightarrow\) They play soccer skillfully .
9, Mr.Tuan and Mr.Nam are careless driver .
\(\rightarrow\) They drives careless .
10, We should finish our homework first .
\(\rightarrow\) We must finish our homework first .
11, Lan must tidy the house everyday .
\(\rightarrow\) Lan has to tidy the house everyday .
12, Ba ought to cook lunch for his mother .
\(\rightarrow\) Ba has to cook lunch for his mother .
1. Ba is a good badminton player
= Ba plays badminton well.( ko có goodly nha )
5. Lan's father is a careful taxi driver
= He drives taxi carefuly
6. My mother is a good cook
= She cooks well.
7. My sister is a beautiful dancer.
= She dances beautifully
8. Nam and Ba are skillful soccer players
= They are play soccer skillfully
9. Mr. Tuan and Mr. Nam are careless driver.
= They drive car carlessly
10. We should finish our homework first.
= We must finish our homework first.
11. Lan must tidy the house everyday
= Lan has to tidy the house everyday.
12. She ought to cook lunch for his mother
= Ba has to cook lunch for his mother
bcnn(0,2005)=0
chú bn hc tốt!
BCNN ( 0 ; 2005 ) = 0
Vì 0 luôn chia hết cho mọi số
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