Which number is greatest? a) 6.23 * 10^12 b)6.23 * 10^8 c)6.23 *10^-6 d)6.23 *10^3

Answer A (6.23*10^12) is the greatest number by far.

Step-by-step explanation:

Each of the four given numbers involves a power of 10, as follows:

10^12, 10^8, 10^(-6) and 10^3.  

10^12 is by far the largest number.  

Thus, Answer A (6.23*10^12) is the greatest number by far.

b

step-by-step explanation:

the word superfluous means unnecessary