bai nay dich ra la 1 quyen sach co cach trang lien tiep tu 1 den 500 hoi quyen sach ay co bao nhieu chu so
bai gai
tu 1 den 9 co 9 chu so
tu 10 den 99 co (99-10):1+1*2=180cs
tu 100 den 500 co (500-100):1+1*3=1203cs
vay quyen sach do co so chu so la 9+180+1230=1392cs
d/s 1392 chu so
The pages of a book are numbered consecutively from 1 through 120. There are ............ digits are there in this numbering.
The pages of a book are numbered consecutively from 1 through 120. There are ............ digits are there in this numbering.
The pages of a book are numbered consecutively from 1 through 120.
There are...... digits are there in this numbering.
A movie theatre has eleven rows of seats . The rows are numbered from 1 to 11 . Odd - numbered rows have 14 seats and even - numbered rows have 15 seats . How many seats are there in the theatre ?
A movie theatre has eleven rows of seats.The rows are numbered from 1 to 11.Odd - numbered rows have 14 seats and even - numbered rows have 15 seats.How many seats are there in the theatre?
A movie theatre has eleven rows of seats.The rows are numbered from 1 to 11.Odd - numbered rows have 14 seats and even - numbered rows have 15 seats.How many seats are there in the theatre?
A movie theatre has eleven rows of seats.The rows are numbered from 1 to 11.Odd - numbered rows have 14 seats and even - numbered rows have 15 seats.How many seats are there in the theatre ?
How many zero digits are there in the million?
.There are 16 rows of seats in a school hall. There are 75 seats in the last row. If there is an increase of 3 seats, starfting from the first row,
a.How many seats are there in the first row?
b. How many seats are there in the school hall?
