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 start with a lowercase letter?

A. 26 × 364
B. 26 × 363
C. 363
D. 26 × 623
E. none of these


Answer: D

Mathematics

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Determine whether the given expression is a polynomial. If it is, write it in standard form.

A. Yes;  - 2
B. No

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Assume that the rate of change in y is proportional to ?y. Solve the resulting differential equation  and find the particular solution that passes through the points 

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B. ??
C. ?
D. ?
E. ?

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Solve the quadratic equation.x2 + 3x - 70 = 0

A. x = 10 or x = -7 B. x = -10 or x =1 C. x = 10 or x = 7 D. x = -10 or x = 7

Mathematics

A baseball coach is creating a nine-player batting order by selecting from a team of 19 players. How many different batting orders are possible? ?

A. 33,522,128,640 B. 33,523,128,640 C. 33,522,628,640 D. 33,572,128,640 E. 33,532,128,640

Mathematics