What is a 15?

a 2 digit number. a biscuit. a bun. 15 biscuits 15 marshmallows. a 2 digit number. a biscuit. a bun. 15 biscuits 15 marshmallows

What is the 15 15 15 on fertilizer bags?

The ratio of Nitrogen, Phosphorus and Potassium is what the numbers '15-15-15' indicate on fertilizer bags. That's why such fertilizers often are called 'NPK' fertilizers. T (MORE)

What is 15 Multiplied by 15?

225. My 9th grade teacher made me memorize the squares of all numbers from 1 to 25 and I have never regretted the hour or so I spent on this task. You might be amazed at how (MORE)