Question

How many numbers are there between 199sq and 200sq

Answer 1

Answer: 398

Step-by-step explanation:

200^2 - 199^2 = 399

Answer 2

397

Explanation:

200^2 - 1 = 40000 - 1 = 39999

199^2 + 1 = 39601+ 1 = 39602

Difference = 397

A couple of things you should keep in mind.

• Between means that the end points are not included. That means you do not subtract 39601 from 40000 to get the answer.
• The minus 1 from 40000 makes sure that you exclude 40000
• The plus 1 added to 39601 makes sure that you exclude 49601