Can you figure out easy-looking math sum in 30 seconds by remembering the special rule?

The answer to this mathematical brain teaser is NOT 40 - can YOU solve it in 30 seconds by remembering the special rule?
IEEE

A Fixed-Time Proximal Gradient Neurodynamic Network With Time-Varying Coefficients for Composite Optimization Problems and Sparse Optimization Problems With Log-Sum Function

Abstract: This article presents a novel proximal gradient neurodynamic network (PGNN) for solving composite optimization problems (COPs). The proposed PGNN with time-varying coefficients can be ...
Edutopia

4 Ways to Bring Logic Puzzles Into Your Math Class

Take the pressure off of problem-solving with engaging thinking games that encourage students to work together to find ...
IEEE

Design of a Quantum Walk Circuit to Solve the Subset-sum Problem

Abstract: Search algorithms based on quantum walks have emerged as a promising approach to solve computational problems across various domains, including combinatorial optimization, and cryptography.
Hosted on MSN

Using crystal clear ice to freeze my finger

How to make your finger look completely frozen! Unusual reasons people have filed for divorce Easy-looking math sum leaves people confused - can you solve it without a calculator? Abu Dhabi Police ...
National Review

Newsom Has His Own Massive State Fraud Problem

California’s scandal dwarfs Minnesota’s. Tim Walz perp-walked himself out of the Minnesota governor’s race this past week, beset by evidence that fraudsters have plundered his state’s federally funded ...