5!4!_7!2!=

Answer 1

the 3rd and the 9th terms of a geometry progression are 54 and 39, 366 respectively. find the 6terms

Answer 2

r^6 = 39366/54 = 729 = 3^6
a = 54/3^2 = 6

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for the factorials, just use any online calculator. geez.