30
What blank?
2 goes into 12 6 times and into 14 7 times Two go's into both numbers. As 2x6=12 and 2x7=14.
It is: 11
Their LCM is 924
30
18 9 11 14 7 9 12 the series is like 18/2= 9 9+2=11 11+3=14 14/2=7 7+2=9 9+3=12 so next number will be.. 12/2=6 then 6+2=8 8+3=11
11
11.
11
11
11
11 15 16