Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to count in binary [title] Learn what binary means. [step] Our normal counting system is called decimal, or " base ten. " we have ten different symbols for writing numbers, ranging from 0 to 9.

Ending1: Multiply and divide to get that number. Subtract from that number to get pi. Ending2: The base ten symbols are : [substeps] Columns. These can be used to represent labels, so for example, in " 3 " row per quart of jar, there are nine columns. Ending3: If this is your first time counting binary numbers, you'll feel that you're going too low and you'll try another method. [substeps] Flashcards: you can use flashcards to write binary numbers in numeric order from 0 to 9. Ending4: Binary is a " base two " system, using only the symbols 0 and 1. [title] Add one by changing the last 0 into a 1.

Answer format: ending1/ending2/ending3/ending4