A headteacher wants to choose a pupil from year 7, 8 or 9 to appear on television. The headteacher gives each pupil one ticket.
Then she will select the winning ticket at random.
The table shows information about the tickets used.

What is the probability that the winning ticket will show number 39?

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms

Ithink i know it but i want to be sure so can you me out ?