Basics of Number Systems
Basics of Number Systems: Overview
This topic covers concepts, such as Properties of Natural Numbers, Properties of Odd Numbers, Rule for Divisibility by 5, Rule for Divisibility by 2, Rule for Divisibility by 3, Rule for Divisibility by 13, Number Systems, Factors of Numbers, etc.
Important Questions on Basics of Number Systems
The greatest number of digit which starts from and ends with is _____


The sum of five consecutive odd numbers is . What is the sum of the largest number and twice the smallest number?

Find the largest given prime number. In four consecutive prime numbers that are in descending order, the product of the first three is and that of the last three is .


A number is divisible by if its:

If all the numbers from 4 to 71 which are divisible by 4 are arranged in descending order, then which number will be at 8th place from the top ?

The natural numbers along with zero forms the collection of:

When is divided by , the remainder is . What is the remainder when is divided by ?



Find the digit in the unit's place of the product .

Which of the following is the maximum sum of ……?

If a quantity is divided in the ratio , the larger part is . Find the quantity.

Find the smallest number from the given options which when divided by or has as remainder in each case.

When is multiplied by , the product is . Find the relation between and

Consider all those two-digit positive integers less than , which when divided by yield unity as remainder. What is their sum?

A number is a positive three-digit number If is at its hundred's place and is at its unit's place, then the number is always divisible by

The least number which must be added to the greatest number of digits in order that the sum may be exactly divisible by is

