GRE Exam Numerical Ability Algebra

If cube root(x) = 3, and x = Sqrt(y), What is the value of y.

Read Solution (Total 1)

taking cube both side
x= cube(3)
=> x = 27
taking square both side
y = square(x)
=> y = square(27)
Therefore, y = 27*27 = 729
9 years agoHelpfull: Yes(0) No(0)

GRE Other Question

3.7, 4.1, a, 8.5, 9.2, 2a
The six numbers shown are listed in increasing order. Which of the following values could be the range of the six numbers? Indicate all such values.
(A) 4.0
(B) 5.2
(C) 7.3
(D) 11.6
(E) 12.9
(F) 14.1 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