1 - 100 Until Basic The numbers 3 1 - 10 Until 4 T ( 2 , 3 , 5 , 6 ) 6 11 - 20 Until 4 ( 11 , 13 , 18 , 19 ) 6 21-30 _ _ Until 2 ( 23 , 29 ) 6 31 - 40 Until 2 ( 31 , 36 ) 6 41 - 50 Until 3 T ( 41 , 43 , 46 ) 6 51 - 60 Until 2 T ( 53 , 59 ) 6 71 - 80 Until 2 T ( 71 , 7 ) 6 71 - 80 Until 3 T ( 61 , 63 , 69 ) 6 81-90 _ _ Until 2 T ( 63 , 69 ) 6 91 - 100 Until 1 T ( 96 ) 6 1 - 100 Until 25 T.