Which of the following is closest to 10^180 – 10^10 ? Choose the most appropriate option
A) 10^210  B) 10^90  C) 10^150  D) 10^180  E) 10^6
10^180 – 10^10   10^10 * (10^170 – 1)   as we know 10^2 - 1 means 100-1 and we get 99, which is approximately 100. hence (10^170 – 1) would remain as 10^170.   and 10^10 * 10^170 = 10^180. Answer is 10^180.
<result>D</result>
Which of the following is closest to 10^180 – 10^10 ?