Which number comes next in the sequence 18,81,27,72,36,63?

or:Which number comes next in the sequence 18,81,27,72,36,63?or:45 as the first number is increasing by nine in next . And the number just after is r

or:Which number comes next in the sequence 18,81,27,72,36,63?

or:45 as the first number is increasing by nine in next . And the number just after is reverse of previous. It was so simple u should poke my navel for thanking me .

Tags:sequence,