:sqrt 4 = 2
3root 4 = at least 1
4root4 = at least 1
2+1+1 = at least 4
Therefore answer is greater than 4.
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Source: Beat The GMAT — Problem Solving |
my approach is ----
the equation can be written as ---
2^2/2 + 2^2/3 + 2^ 1/2
when we calculate the first is 2and the third is 1.414......so we are left with options c or d
also i can multiply and divide the second term by------2 ^1/3
or it will be 8/ 2^ 1/3------which should be greater enough so that the final result is greater than 4
the equation can be written as ---
2^2/2 + 2^2/3 + 2^ 1/2
when we calculate the first is 2and the third is 1.414......so we are left with options c or d
also i can multiply and divide the second term by------2 ^1/3
or it will be 8/ 2^ 1/3------which should be greater enough so that the final result is greater than 4
