Jane Street Interview Question

What is 87 x 46?

Interview Answers

Anonymous

Feb 10, 2011

(90-3)*(50-4)= 4500-150-360+12= 4500-500-10+12=4002

2

Anonymous

May 1, 2013

And this calculate from head?

2

Anonymous

Jul 17, 2014

(87*50) - (87*4) This can be done without pen and paper.