Maths Doubt Sms

Maths Terror: “““““““` We say these no’s: 21 as Twenty One 31 as Thirty One …41 as Fourty One 51 as Fifty One . . . . . 91 as Ninety One But.,., why not 11 as Onety One..,,,.,.,,?????????? Pls ennakku intha doubt 5th standard lla irrunthey irrukku.,.., So yarravathu konjaam clear pannungaa..,