It really depends. If you are going for individual digits' sake, it is split evenly between 0 and 1. Google maxed out at 25,270,000,000 results for both in the exact same amount of time.
"7 is the most used number"
Google says otherwise. It took 0.11 seconds for both 0 and 1 to reach 25,270,000,000 results when used as a search query, but it took 0.83 seconds for it to find 25,270,000,000 results for 7.
Curettage--with or without electrosurgery--is the second most commonly used treatment in the United States. (Cryosurgery is the most commonly used treatment in the United States.)
cost
1's and 0's-Machine Language
A delectable number is a positive integer that is divisible by the sum of its digits. For example, the number 18 is delectable because 18 is divisible by 1+8=9. Delectable numbers are a type of recreational number theory problem and are not commonly used in practical applications.
Most houses don't use common bricks for the foundation. Concrete is more effective and commonly used.
binary and hexadecimal
The most commonly used measure of concentration for an aqueous solution is molarity, which is the number of moles of solute per liter of solution.
The 12 most commonly used Interjections:yesohyeahnoheyhihellohmmahwowouchhurray
what are the most commonly used price indexes
What is the most commonly used e-communication
According to surveys, marijuana is the most commonly used drug by teens.
ID printers are most commonly used to print identification cards. These include drivers licenses, health cards, credit cards and social insurance number cards.
Arabic is the most commonly used language in the Sahara.
I believe that Crest is the most commonly used toothpaste in America.
The most commonly used sclerosants are ethanolamine and sodium tetradecyl sulfate
Interjections are most commonly used in speech or dialogue.
"E" is the most commonly used letter in English. "S" is the most commonly used first letter for words.