1/X + 1/Y = 1/3....How many ordered pair (x.y) satisfy this.
how many positive integers less than or equal to 120 are relatively prime to 120?
the value of x+y such that x square - y square =343 and x,y are positive integers is,
4. a or b
the difference between the cubes of two consecutive positive integers is 1027. then the product of these integers is.
The teacher of Confucius, the confused soul, told him: "my age a two digit number is not prime but odd and if you reverse the digits of my age and add that number to my age , you obtain a number that is a perfect square. if you reverse the digits of my age and subtract the number from my age you again have a perfect square.
the age of Confucius teacher was a number divisible by
7, 9, 13, 15