Browse · MATH Print → jmc algebra junior Problem Define the operation ♠ as a♠b=∣a−b∣ . What is the value of 2♠(4♠7)? Solution — click to reveal Work from the inside out: 2♠(4♠7)=2♠(∣4−7∣)=2♠∣−3∣=2♠3=∣2−3∣=1. Final answer 1 ← Previous problem Next problem →