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(a) The first term of
arithmetic
progression (AP) is
2.The sum of the
first 8 terms of the
AP is 156.
(i) Find the
common
difference of the
AP.
(ii) Given that the sum of the first n terms of the AP is 416,find n.
(b) The #3^(rd#,#5^(th# and #8^(th# terms of another AP from the first three terms of a geometric progression (GP).If
the common
difference of the AP
is 3,find
(i)the first term of
the GP
(ii)the sum of the
first 9 terms of the
GP ,to 4 significant
figures.