A computer password is made up of four characters. Each character can be a capital letter (A through Z), a lowercase letter (a through z) or a digit (0 through 9).How many passwords consist entirely of letters?
A. 52 × 51 ×50 × 49
B. 52 × 4
C. 524
D. 452
E. none of these
Answer: C
You might also like to view...
Provide an appropriate response.Kilowatt readings were taken for the months of June at 1,520, July at 1,358, August at 1,298, September at 1,805, and October at 965. Round each amount to the nearest thousand to identify the months with the most similar power usage.
A. June 2, July 1, August 1, September 2, October 1 B. June 2,000, July 1,000, August 1,000, September 2,000, October 1,000 C. June 2,000, July 1,000, August 1,000, September 2,000, October 900 D. June 1,000, July 1,000, August 2,000, September 2,000, October 1,000
Right triangle ABC has 
, 
, and 
style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_14455ebf5b3b4469b28aa8009" />. Use this information to find cos A.
?
A. 
B. ?
C. ?
D. ?
E. ?
Write the prime factorization of the number.175
A. 25 ? 7 B. 25 ? 5 C. 52 ? 7 D. 72
Match the equation to its graph.x2 = -9y
A. 
B. 
C. 
D. 