EXTRA SPICY NTH TERM PRACTICE PROBLEMS

Find the value of the 50th term of the following sequences:

1. 2, 9, 20, 35, 54, 77
2. 0, 3, 8, 15, 24, 35
3. 4, 10, 18, 28, 40, 54
4. 6, 21, 40, 63, 90, 121
5. -3, 8, 25, 48, 77, 112
6. 6, 25, 56, 99, 154, 221
7. 5, 40/3, 77/3, 42, 187/3
8. -10, -6, 0, 8, 18
9. 3, 1, 0,0, 1, 3, 6

Find the next term:

1. 4, -8, 16, -32, 64
2. 18, -3, -6, 1/2, -12, -1/24

Find the sum of the:

1. first 90 even integers.
2. first 85 odd integers.
3. 150 consecutive integers.
4. 55 + 56+ 57+...+240=?
5. 66+68+70+...+248=?
6. 71+73+75+...+153=?
7. 1+2+3+...+917=?
8. 555+556+557+...+900=?
9. 1+3+5+...+559=?
10. 333+335+337+...763=?
11. 2+4+6+...+1672=?
12. 444+446+448+...+888=?

You MUST either:

1. post a question
2. post an answer

for credit this evening.

Have fun!