Assume the number as ABCD
1. First 2 digits and last 2 digits are successive multiples
2. If you add first 2 digits with last 2 digits you get a three digit number which has a special attribute (what's special about this number)
3. If you reverse the 4 digit number (DCBA) and add DC + BA you get a perfect square
4. DC and BA are even multiples of two prime numbers
1. First 2 digits and last 2 digits are successive multiples
2. If you add first 2 digits with last 2 digits you get a three digit number which has a special attribute (what's special about this number)
3. If you reverse the 4 digit number (DCBA) and add DC + BA you get a perfect square
4. DC and BA are even multiples of two prime numbers
The numbers are 36 and 85.
ReplyDeletea. 36 is multiple of 4 and 85 is multiple of 5.
b. 36+85=121 and 63+58=121
c.DCAB=5863, 58+63=121.
d. 36 is a multiple of 3 which is a prime number, 85 is a multiple of 5 which is a prime number.