If the first term of a g. p.be 5 and common ratio is - 5 then
options
a) 6th term is 125
b)6th term is 625
c)4th term is - 625
d)3rd term is 125
with explanation
Answers
Answered by
1
Answer:
a = 5
r= -5
4th term = ar^3
=5 × (-5)^3
=5 ×(-125)
=-625
3rd term = ar^2
= 5 × (-5)^2
=5 ×25
=125
correct answer = c and d
Answered by
1
Answer:
option no c is right answer
Explanation:
t= ar^n-1
a=5
r=-5
so
5×(-5)^4-1
5×(-125)
-625
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