rommysingh wrote:if M= Sqrt(4) + third root(4) + Fourth root (4) then M is
A. Less than 3
B. Greater then 3
C. Between 3 and 4
D. Equal to 4
E. Greater than 4
The square root of 4 =
2
The cube root of 4
The cube root of 1 = 1
The cube root of 8 = 2
So, the cube root of 4 is between 1 and 2.
In other words, the cube root of 4 =
1.something
The fourth root of 4
The fourth root of 1 = 1
The fourth root of 16 = 2
So, the fourth root of 4 is between 1 and 2.
In other words, the fourth root of 4 =
1.something
TOTAL SUM =
2 +
1.something +
1.something
=
more than 4
=
E
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
