What is the value of a single-digit number a, if this number a is obtained by subtracting a two-digit number wx from another two digit number yz.
(1) Unit's digit of wx is same as unit's digit of 3^(18) and unit's digit of yz is same as unit's digit of 7^(09).
(2) Ten's digit of wx and yz are same.![]()
(1) Unit's digit of wx is same as unit's digit of 3^(18) and unit's digit of yz is same as unit's digit of 7^(09).
(2) Ten's digit of wx and yz are same.