# New post in Elementary-number-theory

March 15th, 2020

## Show that $\sqrt{2}$ is irrational using the integer root theorem

August 26th, 2020

August 1st, 2022

## Single fixed deposit vs multiple fixed deposits

December 29th, 2020

April 25th, 2020

August 1st, 2022

## prove that an integer a is odd if and only if it can be written as a sum of two consecutive integers

February 19th, 2020

## Let $w, x, y, z$ be natural numbers. Find the correct alternative.

January 19th, 2020

## Arrangements of bingo cards with constraints

November 30th, 2020

## Equality of equivalence classes for congruence modulo 7

November 10th, 2020

May 15th, 2020

July 10th, 2020

May 13th, 2020

June 25th, 2020

April 14th, 2020

April 11th, 2020

## Prove n is a product of a square and a cube

August 10th, 2020

## The proof of perfect square having $0,1,4,5,6,9$ as units digit

August 13th, 2020

## Product of two distinct odd primes is not carmichael

January 27th, 2020

August 1st, 2022

March 3rd, 2020

## Show that if $(x,y) =1$ then $(x-y, x+y)$ is either $1$ or $2$.

February 18th, 2020

March 1st, 2020

August 1st, 2022

## Smallest positive integer n

October 7th, 2020

## finding missing digits using divisibility rules

September 23rd, 2020

March 29th, 2020

## Find integers x, y such that 242x + 2240y = gcd(242,2240)

February 7th, 2021

## Check If a Number is in three-square form

January 11th, 2020

## Proving that even numbers equal the sum of two odd numbers.

September 13th, 2020