Answer 100
Because in these numbers its name not containing letter T. Next letter without T is hundred. 1 - one 4 - four 5 - five etc..
Because in these numbers its name not containing letter T
But these numbers have letter T, so they are rejected. 2 - two 3 - three 8 - eight
These numbers doesn't contain letter T in its words.
The next number without T is HUNDRED.
1 = one 2 = two - rejected 3 = three - rejected 4 = four 5 = five 6 = six 7 = seven 8 = eight - rejected 9 = nine 10 = ten - rejected 100 = hundred
Twelve maybe?