ERJ Brainteaser: April
31 Mar 2025

Each month, ERJ sets a weekly brainteaser, with questions of varying degrees of difficulty. Readers supplying the most accurate (and stylish) answers are then considered for the prestigious Brainiac of the Month title.
Question 1: Make my day!
2nd of May
7th of September
4th of March
?
Email your answer: correct replies on Friday.