How many is 16 and 6?

Which is finer.5mm pen point or 7mm pen point? What means 12 greater than a number? What is the greatest prime number of 860? How do write 0.000006 m in scientific notation? How do you find the percentage of 1298 of 1500? What does meter mean in reading? How many thousands are there in hundreds thousands? If you make 20 dollars an hour how much do you make a year if you work 40 hours a week? How many equal angles and right angles has a obtuse triangle have? What number will you get if you will add the sum of 18 and 36 to the difference of 45 and 27? how many times can 1go into 4? What is 10 plus 10 plus 10 plus 5 plus 5 plus 1? The graph of sine and cosine function? How many amps do you lose in 40 feet? Is this formula combination or decompositon Fe plus O2 equals Fe2O3? How does linear perspective help a flat canvas look like it had three dimensions? What goes into 230? What is less than half but more than a whole? Bob invests part of 13000 at 3 perc simple annual interest and the rest at 2 perc simple annual interest If his total yearly interest from both accounts was 340 find the amount invested at each rate.? Who was the first person to use letters as variables?