educate/math.js at master · cihant/educate · GitHub

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function getDividings(amount)
{
	var r = [];

	while(r.length < amount)
	{
		var a = getRandomInt(100, 1000);

		var b = getRandomInt(10, 100)
		var key = a+','+b;
		if(a % b == 0 && r.indexOf(key) == -1){
			document.write(r.length + 1, ')  ', a, ' / ', b, ' = ', a/b, '<br/>');
			r.push(key);
		}
	}
}
function getMultiplies(amount)
{
	var r = [];

	while(r.length < amount)
	{
		var a = getRandomInt(100, 1000);
		var b = getRandomInt(10, 100)
		var key = a+','+b;
		if(r.indexOf(key) == -1){
			document.write(r.length + 1, ')  ', a, ' * ', b, ' = ', a * b, '<br/>');
			r.push(key);
		}
	}
}
function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}