Question

Test the divisibility of the following number by 10: 55555

Answer 1

Hint: In this particular type of question use the concept that according to the divisibility rule of 10 if the last digit of any number is 0 then the whole number is divisible by 10. So, use this property to check whether the number is divisible by 10 or not.

Complete step-by-step answer:
Given: - The number is 55555.
Divisibility tests or division rules help one to check whether a number is divisible by another number without the actual method of division. If a number is completely divisible by another number then the quotient will be a whole number and the remainder will be zero.
Since every number is not completely divisible by every other number such numbers leave the remainder other than zero. These rules are certain ones, which help us to determine the actual divisor of a number just by considering the digits of the number.
Divisibility rule for 10: It states that if any number whose unit digit is 0, then it is divisible by 10.
For example, we take any number like 72540.
Since the unit digit of the number is 0.
Therefore, it is divisible by 10.
Now, come to the question, the given number is 55555.
The unit digit of 55555 is not 0.

Hence, 55555 is not divisible by 10.

Note: Whenever we face such types of questions the key concept, we have to remember is that always recall the divisibility rule of 10 which is stated above and these rules are the basis to solve these types of questions and if we don’t remember the rule then divide the numbers directly.