20
This cannot be answered. This will have to be written to where it can be understood.
25 digits
167 may be written as one hundred sixty-seven. A hyphen should always be used between the tens and units digits when writing out numbers, but never between the hundreds and tens digits.
The sum of the number of digits in all the numbers between 31 and 400 inclusive is 1041.
Instead of reading the numbers from left to right (1234) read them from right to left (4321).
This cannot be answered. This will have to be written to where it can be understood.
25 digits
There are 6484 digits BETWEEN the two given numbers.
Spell_out_whole_numbers
167 may be written as one hundred sixty-seven. A hyphen should always be used between the tens and units digits when writing out numbers, but never between the hundreds and tens digits.
Some numbers that you can get when you reverse the digits and they are still prime numbers are: 403 ÷ 13 = 31 2,701 ÷ 37 = 73 1,207 ÷ 17 = 71
72 reverse the digits divide by 3 = 24
The sum of the number of digits in all the numbers between 31 and 400 inclusive is 1041.
223
123
Instead of reading the numbers from left to right (1234) read them from right to left (4321).
61 42 56 89