24 22 27 20 30 () 33 16 () find the law

24 22 27 20 30 () 33 16 () find the law


Odd digit is minus 2, even digit is plus 3, so it should be 18 36 in brackets



17 24 22 33 46 () 92 find the law


65 third order arithmetic sequence
17+7=24 24+9=33 33+13=46 46+19=65 65+27=92
7+2=9 9+4=13 13+6=19 19+8=27
2+2=4 4+2=6 6+2=8



The maximum factor of a number is 27. What are all its factors? What is the minimum multiple of this number?


The maximum factor of a number is 27, and all its factors are 1, 3, 9 and 27
The minimum multiple of this number is 27