Big Numbers Should not be Scary

Algebra Level 3

If A = 1 0 9 − 987654321 A = 10^9 - 987654321 and B = 123456789 + 1 10 B= \dfrac{123456789 + 1}{10} . What is the value of A B ? \sqrt{AB}?

Source : MIT-Harvard Mathematics Tournament 2010.
12345679 98765432 12345678 45678932

Hana Wehbi by Hana Wehbi , 51, USA

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.

1 solution

Hana Wehbi
Nov 5, 2016

Both A and B are equal to 12345679 12345679 , thus A B = 12345679 \sqrt{AB}= 12345679

1 Helpful 0 Interesting 0 Brilliant 0 Confused

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...