THIS CACHE IS NOT AT THE POSTED COORDINATES

*Please note this cache is located on Bribie Island. Some form of a boat may be required if you don't want to drive from the bottom up...*

Again, keeping with the theme of Mathematics, so you can finally put some of that useless math you learnt at school to good use! The cache is located at S 26º 48.ABC, E 153º 07.DEF

Calculate A

For the sequence defined by the equation, t_n = n² ÷ (2n) + 3, t₆ equals what?

Calculate BC

A coach is selecting a 7-a-side soccer team to travel to Bribie Island. There are 8 outfield players and 2 goalkeepers. In how many ways could a team of 6 outfield players and 1 goalkeeper be selected?

Calculate DEF

Conrad has been selected in a 7-a-side team and gets the opportunity to travel to Bribie Island. He decides while he is there that he is going to grab some caches. He can bring a geocoin, a travel bug and is to use a boat to reach bribie. He has 112 geocoins, 4 travel bugs and can pick between 2 boats to go into. How many different selections are possible if he can also choose to omit the geocoin?

Good luck :D

FTF = dahumbug