Subtract.-1 - (-1)
A. -2
B. -1
C. 2
D. 0
Answer: D
Mathematics
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Solve the problem.Using the numerals 0 through 9, how many 7-digit serial numbers can be made if the first digit must be 0 or 1 and no numerals may be repeated?
A. 1008 B. 8 C. 120,960 D. 40,320
Mathematics
Find the key numbers of the expression.
?
?
A. 0, 
B. 0, 49
C. 0, 51
D. 0, -49
E. 0, 
Mathematics
Evaluate. Assume that all variables represent positive numbers. |-21|
A. 0 B. 42 C. 21 D. -21
Mathematics
Identify the base and the exponent for the exponential expression.42
A. Base is 2; exponent is 4. B. Base is 8; exponent is 2. C. Base is 4; exponent is 2. D. Base is 2; exponent is 8.
Mathematics