Question 9
It is given that the first foru term of a geometric progression are 3, -6, 12 and x. Find the value of x [2m]
Question 10
The first 3 term of an arithermetic progression are 46, 43 and 40. The nth term of this progression is negative. Find the least value of n [3m]
Question 11
In a geometic progression, the first term is 4 and the common ratio is r. Given that the sum to infinity of this progress I 16, find the value of r [2m]
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