BOOK Maths Puzzle Numerical Ability Arithmetic

Let there is a four digit number ABCD when multiplied by 4 its digit reversed in order of DCBA.Then what is the digit ABCD?

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2178 * 4 = 8712
10 years agoHelpfull: Yes(0) No(1)

BOOK Other Question

Tina have some parrots and some cages for it. if she put 4 parrots into each cage then she will have one cage left. if she put 3 parrots into each cage then she will have one parrot left over. how many parrots and cages does she have? if log242=a, log80=b, log45=c then
express log66 in terms of a,b,c .