How many possible keys does the playfair cipher have? an approximate power of 2

How many amps are in a 3v battery?

Select the clothing items that would be appropriate in an office. A suit jacket and tie. A t shirt that says, "I heart music." A knee-length skirt. A pair of flip flops. A high heel. A tank top and short skirt. A sweatshirt.

Which of the following meanings can a $ character assume within a regular expression? (can have more than 1 answer) a. A literal dollar sign b. Shell variable syntax c. End-of-line anchor for pattern matching d. Match any single character

Which is a stepping-stone toward future education?

How do you access clip art stored in a CD-ROM or on a web site

Search engines like Google automatically sort reliable web sites from ones that are not reliable. true or false

Examples of environmental technology

What are the advantages of technology

What is a deny all catch all

Which of the following is NOT a good technique for photographing children?