2.) QR 3.) SW 6.) TW 8.) 7 9.) 30 11.) please supply a better picture for 11, can't see the problem very well
sorry, didnt mean to reply to this
The missing digit could be any number from 0-4 because if it were any from 5-9 then it would be rounded to 16,000.
Five million one hundred sixty five thousand eight hundred seventy four.
#4)
opposite of 51 is -51
reciprocal of 51 is 1/51
hope it helps