dịch: một quyển sách đánh số trang liên tiếp tù 1 đến 120.Có ..... chữ số trong quyển sách này?
giải
từ 1 đến 9 có: 9 chữ số
từ 10 đến 99 có :90 số x 2=180 chữ số
từ 100 đến 120 có :21 số x 3 =63 chữ số
có tất cả là :9+ 180+ 63= 252 chữ số
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 òf a book are numbered consecutively from 1 through 500. There are ......... digits are there in thí 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 ?
.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?
Choose 3 digits from 8, 6, 0, 5, 2 and 1 to form 3-digit numbers. How many odd numbers
are there? (The repetition of digits is not allowed)giúp me với
