In a sequence of four positive numbers, the first three are in geometric progression and the last three are in arithmetic progression. The first number is 12 and the last number is 452. The sum of the two middle numbers can be written as ab where a and b are coprime positive integers. Find a+b.

Question

raden · Answer

this is the Brilliant's question, right ?

anonymous · Answer

lord have mercy
this is like the fifth time i have seen this exact same question
should make a template for it
where does it come from?

anonymous · Answer

nvm
its from  brilliant math challnage

anonymous · Answer

it even has the same damn typo as the other four! it cannot be the case that the sum of the  two middle numbers are $ab$ it should be $\frac{a}{b}$

anonymous · Answer

what the monkey is "brilliant math challenge"?

anonymous · Answer

if u want to se that, u can eccess thought facebook or manually