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5. The 5th, 6th and 7th terms of an A.S are
t-2; 2t-6; 4t-8
a) Find the value of t.
b) Find the first 3 terms of the sequence.

6. The 4th, 5th and 6th terms of an G.S are
x-4; x+2; 3x+1
a) Find the value of x.
b) Find the sequence.



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