Who ever makes polnareff there profile pic is my new friend

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?

Find the area of the shaded region.