216.
216
50
(a)(a-2)(a+2)(2a) It can be: 2044 3156 4268
This is missing some information. You mentioned the tens digit twice and didn't mention the ten thousands digit. One possibility is 87184.
804
216
452, 894. None other that I can think of
4284
50
(a)(a-2)(a+2)(2a) It can be: 2044 3156 4268
22621, 44742, 66863, 88984
This is missing some information. You mentioned the tens digit twice and didn't mention the ten thousands digit. One possibility is 87184.
2.3
1.382 OR 0.000 or 2831
9218 9425
804
Oh, dude, that's like a math riddle straight out of a textbook. So, let's break it down: if we have twice as many thousands as ones, that means the thousands digit has to be 8 (since 8x2=16). Then, twice as many ones as hundreds means the ones digit is 2 (since 2x2=4). And finally, twice as many hundreds as tens means the hundreds digit is 4 (since 4x2=8). So, the number is 8422. Math can be fun, right?