Of the following sums, which is greatest ?
(A) 1/root 2 + 1/root 3+ 1/root 4+ 1/root 5
(B) 1/2^2 + 1/3^2 + 1/4^2 + 1/5^2
(C) 1/2^2 + 1/2^3 + 1/2^4 + 1/2^5
(D)1-1/2+1/3-1/4
(E) 1/2+1/3+1/4 +1/5
OA:A
Which is the easiest and fastest way to solve this problem??
(A) 1/root 2 + 1/root 3+ 1/root 4+ 1/root 5
(B) 1/2^2 + 1/3^2 + 1/4^2 + 1/5^2
(C) 1/2^2 + 1/2^3 + 1/2^4 + 1/2^5
(D)1-1/2+1/3-1/4
(E) 1/2+1/3+1/4 +1/5
OA:A
Which is the easiest and fastest way to solve this problem??
