A probability problem by Victor Paes Plinio

Probability Level pending

a a and b b are positive integers. If a a and b b are two consecutive terms of a geometric progression of common ratio 1 2 \frac{1}{2} and the independent term of ( a x b x ) 12 {\left(ax-\frac{b}{\sqrt{x}}\right)}^{12} is 7920 7920 , find the value of a + b a+b .

Problem from ITA 2018 (Instituto Tecnológico de Aeronáutica)


The answer is 3.

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

0 solutions

No explanations have been posted yet. Check back later!

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...