Btec: Progressions Mixed

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Difficult

Q1) What is the 15th term of the sequence 0,6,12,18,24...?  
Q1) What is the sum the first 12 terms of 1,2,4,8,16... ?
Q1) The sum of the sequence 3,6,12,24... is 98301. How many terms does it contain?
Q2) The nth term of sequence 5,6,7,8,9... is
Q2) What is the sum the first 12 terms of 9,18,36,72,144... ?
Q2) The sum of the sequence 1,4,16,64... is 349525. How many terms does it contain?
Q3) What is the nth term formula Un of 10,30,90,270... ?
Q3) What is sum of the sequence 4,14,24,34,44,54,64?
Q3) What is the sum of the first 35 terms of the sequence 6,11,16,21,26,...,?
Q4) The nth term of sequence 9,17,25,33,41... is
Q4) What is the sum the first 8 terms of 10,40,160,640,2560... ?
Q4) What is the sum of the first 40 terms of the sequence -14,-24,-34,-44,-54,...,?
Q5) What is the 25th term of the sequence -5,-2,1,4,7...?  
Q5) What is sum of the sequence 5,3,1,-1,-3,-5,-7,-9?
Q5) The sum of the sequence 1,3,9,27... is 29524. How many terms does it contain?
Q6) The nth term of sequence 5,7,9,11,13... is
Q6) What is sum of the sequence -3,-7,-11,-15,-19,-23,-27?
Q6) The sum of the sequence 7,14,28,56... is 229369. How many terms does it contain?
Q7) What is the 15th term of the sequence 13,16,19,22,25...?  
Q7) What is sum of the sequence 11,20,29,38,47,56,65?
Q7) The sum of the sequence 7,21,63,189... is 206668. How many terms does it contain?
Q8) The nth term of sequence 9,13,17,21,25... is
Q8) What is sum of the sequence -7,-5,-3,-1,1,3,5?
Q8) The sum of the sequence 5,15,45,135... is 147620. How many terms does it contain?
Q9) The nth term of sequence 12,14,16,18,20... is
Q9) What is sum of the sequence 13,17,21,25,29,33,37,41?
Q9) The sum of the sequence 10,20,40,80... is 327670. How many terms does it contain?
Q10) What is the 10th term of the sequence 3,9,15,21,27...?  
Q10) What is sum of the sequence 1,4,7,10,13,16,19?
Q10) The sum of the sequence 5,10,20,40... is 163835. How many terms does it contain?