Method 1: 6: 00 to 24: 00 * * Yes 18 hours. 18/4=4.5, so the news is broadcast four times a day from 6: 00 to 24: 00. * * * Yes 18 hours.

Method 2, (24-6)/4=4.5, played 4 times.

Extended data

Problem solving skills:

1, skillfully solving problems depends on the knowledge you usually learn to use flexibly.

2. Familiar with the question type: Mathematical problems are generated by counting, calculating, measuring and observing the shape and movement of objects through abstract and logical reasoning.

Mathematical problems can be roughly divided into fill-in-the-blank questions, true and false questions, multiple-choice questions, calculation questions, application questions, proof questions, drawing questions, thinking questions, reading questions, regular questions and problem solving.