general Maths Puzzle

Which represents the type of sequence: 12, 22, 30, 36, 41, …?

a) neither arithmetic nor geometric
b) both arithmetic and geometric
c) arithmetic
d) geometric

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general Other Question

Find a geometric series which has a third term of 7/4 and a sum to infinity of 14. Find 8 terms of the arithmetic progression if the second term is 2 and the sixth term is 5