If x is an integer and 2.13 × 10^x is less than 2100, what is the greatest possible value for x?
Choose the correct answer
A) 2  B) 6  C) 5  D) 4  E) 3
If x=3   2.13 × 10^3 = 2130 &gt; 2,100   So, x = 2   2nswer : 2
<result>A</result>
If x is an integer and 2.13 × 10^x is less than 2100, what is the greatest possible value for x?