GRE Exam Numerical Ability Algebra

Chris entered a number in his calculator and erroneously multiplied the number by 2,073 instead of 2.073, getting an incorrect product. Which of the following is a single operation that Chris could perform on his calculator to correct the error? Indicate all such operations.
(A) Multiply the incorrect product by 0.001
(B) Divide the incorrect product by 0.001
(C) Multiply the incorrect product by 1,000
(D) Divide the incorrect product by 1,000

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GRE Other Question

If cube root(x) = 3, and x = Sqrt(y), What is the value of y. How many different two-digit positive integers are there in which the tens digit is greater than 6 and the units digit is less than 4 ?
(A) 7
(B) 9
(C) 10
(D) 12
(E) 24