What is the first term of the geometric sequence whose fifth term is 1/24 and tenth term is 1/768
HELP ME PLEASE !

Question

What is the first term of the geometric sequence whose fifth term is 1/24  and tenth term is    1/768
HELP ME PLEASE !

anonymous · Answer

Thanks

anonymous · Answer

solomonzelman · Answer

the common ratio is 1/2

solomonzelman · Answer

I started dividing 768 by 2, and saw that you divide by 2 exactly 5 times to get to 24.

solomonzelman · Answer

So 24 is 5th term.
24 × ½ = 12,      4th term
12 × ½ = 6,        3rd term
6 × ½ = 3,          2nd term
3 × ½ = 3/2,      1st term

solomonzelman · Answer

Makes sense ?

anonymous · Answer

Sorry my bad for wrong answer ;/