...125
All numbers that end with 5 are divisible by 5.All numbers that end with 5 are divisible by 5.All numbers that end with 5 are divisible by 5.All numbers that end with 5 are divisible by 5.
16, 81, 625 and so on. Prime numbers to the 4th power.
All of the numbers that end in 5 are multiples of 5 which means that they have more than two factors.
5 and 2 are the only prime numbers that end in a 5 or 2. A prime number is by definition only divisible by 1 and itself, and all other whole numbers ending in 5 or 2 are divisible by 5 or 2, respectively. Numbers that are not whole numbers cannot be prime.
Other than 2, no prime numbers are even. So prime numbers can't end in even numbers. After 5, no prime number can end in 5. After 5, all prime numbers end in 1, 3, 7 or 9.
It is 2.
All numbers larger than 5 which end in 5 are divisible by 5 and so are not prime. All numbers larger than 2 which end in 2 are divisible by 2 and so are not prime.
They are the numbers that end with a 0
Odd numbers end with 1, 3, 5, 7, or 9.
-- All of the numbers that end with a zero are divisible by 10.-- All of those, and all of the numbers that end with a 5, are also divisible by 5.
-- All of the numbers that end with a zero are divisible by 10.-- All of those, and all of the numbers that end with a 5, are also divisible by 5.
There are 100 numbers that end in 0 (10, 20, 30, ..., 1000) and 200 numbers that end in 5 (5, 15, 25, ..., 995). However, numbers that end in both 0 and 5 (multiples of 10) have been counted twice, so we need to subtract these duplicates. There are 100 numbers that end in both 0 and 5 (e.g., 10, 20, ..., 1000), so the total number of numbers that end in 0 or 5 is 100 + 200 - 100 = 200.