Question

How many even composite numbers are there between $1\mathrm{to}200$?

Answer 1

Finding the composite numbers between $1\mathrm{to}200$:

Composite numbers are the natural numbers having more than two factors.

The even composite numbers from $1\mathrm{to}200$ are

$$\begin{gathered} 4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50, \\ 52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100, \\ 102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140, \\ 142,144,146,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176, \\ 178,180,182,184,186,188,190,192,194,196,198,200 \end{gathered}$$

Thus, the number of even composite numbers from $1\mathrm{to}200$ is $99$.