The ratio of two-digit natural numbers to the number obtained on reversing its digits is 7:4
. Find the sum of all possible numbers of such pairs.
A.310
B.330
C.328
D.332
E. none of these
The ratio of two-digit natural numbers to the number obtained on reversing its digits is 7:4
. Find the sum of all possible numbers of such pairs.
A.310
B.330
C.328
D.332
E. none of these