Question

a four digit number is expressed as abcd, where is letter stand for a digit. find the general form of the sum of the number and the number formed by reservingthe order of its digits.​

Answer 1

Answer:

abcd can be written as 1000a+100b+10c+d

its reverse can be written as 1000d+100c+10b+a

their sum=1000a+100b+10c+d+1000d+100c+10b+a =1001a+110b+110c+1001d