Five numbers are in A.P., whose sum is 25 and product is 2520. If one of these five numbers is $- \frac { 1 } { 2 }$, then the greatest number amongst them is (1) 27 (2) 7 (3) $\frac { 21 } { 2 }$ (4) 16
Five numbers are in A.P., whose sum is 25 and product is 2520. If one of these five numbers is $- \frac { 1 } { 2 }$, then the greatest number amongst them is\\
(1) 27\\
(2) 7\\
(3) $\frac { 21 } { 2 }$\\
(4) 16