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ND
0
MT
5
24 tháng 5 2019
\(A=\frac{1}{3}.\left(\frac{3}{2.4.6}+\frac{3}{4.6.8}+...+\frac{3}{22.24.26}\right)\)
\(A=\frac{1}{3}.\left(\frac{1}{2.4}-\frac{1}{4.6}+\frac{1}{4.6}-\frac{1}{6.8}+...+\frac{1}{22.24}-\frac{1}{24.26}\right)\)
\(A=\frac{1}{3}.\left(\frac{1}{2.4}-\frac{1}{24.26}\right)\)
\(A=\frac{1}{3}.\frac{77}{624}\)
\(A=\frac{77}{1872}\)
8 tháng 2 2022
english
math
IT (Information Technology)
PE (Physical Education)
Art
Music
30 tháng 7 2021
V.Read and circle a , b or c.
Hi , my name is Peter .This is my grandma . She is 75 years old. She can remember all the phone numbers of my family members. My father’s phone number is 0989087652 . My mother’s phone number is 0912388878 . My brother’s phone number is 01020304050 . But my grandma can’t remember her phone number because she never calls it.What is your phone number ? Can you remember it ?
1. Peter’s grandma is …………………….
a .sixty – five b. seventy – five c . eight- five d.fifty-five
2. His grandma can remember all the ………………… of the family members.
a. names b. jobs c.phone numbers d.numbers
3. His ……………………. phone number is 0989087652.
a. father’s b. mother’s c . brother’s d.sister’s
4. His ……………………. phone number is 0912388878.
A . father’s b. grandmother’s c . brother’s d. mother’s
??
Mua năm cây bút chì hết 15000 hỏi mua 6 cây bút chì thì hết bao nhiêu tiền