The two-digit number whose ten’s digit is ‘t’ and units’s digit is ‘u’ is __________.

e.g.

Let 29 be a number in that 2 is in ten’s place

9 is in unit’s place

Given

‘t’ is ten’s digit of a two-digit number

‘u’ is unit’s digit of a two-digit number

A two-digit number consists of two digits only

∴ The two-digit number is ‘tu’