Question

How many even numbers are there between 1 to 540

Answer 1

271

Explanation:

The count of even numbers between 0 and n is [n/2] + 1.

540/2=270

270+1=

271

Answer 2

To find the number of even factors, we can multiply the number of odd factors by the power of 2 (not the power of 2 + 1!!!). For 540, we have (3 + 1)(1 + 1)(2) = 16 even factors.