Medal and Fan!

5, -15, 45, -135, …

A.405, 1215, 3645

B.675, -3375, 16875

C.405, -1215, 3645

D.405, -1215, -3645

Question

Medal and Fan!

5, -15, 45, -135, …
		
A.405, 1215, 3645
		
B.675, -3375, 16875
		
C.405, -1215, 3645
		
D.405, -1215, -3645

theoneandonly · Answer

I Believe it's B

thesmartone · Answer

Correct :)

mrnood · Answer

@TheSmartOne @Theoneandonly

It is not B

this is a geometric progression.

Find the common factor and multiply the current term by that to get the next term

note: the sequence alternates between + and - numbers

thesmartone · Answer

oops, got confused with multiplying with 3 and 5 >.<

brydenwright · Answer

I'd say it's C because the pattern is multiplication by -3, and -135 times -3 is 405, times -3 is -1215, times -3 is -3645

brydenwright · Answer

I mean +3645

alivejeremy · Answer

^^

sshayer · Answer

c is correct

jhonyy9 · Answer

C. is correct,right sure - yes @triciaal ? i ask you just bc.  you are here now

mrnood · Answer

how about letting @Theoneandonly contribute and make his OWN decision now we have explained the method?