Understanding Teen and T Numbers

Which of the following numbers is a teen number?

• 80

• 50

• 14

• 30

What is the main characteristic of T numbers?

• They contain the number one

• They end with zero

• They are odd numbers

• They are prime numbers

How does the number 15 differ from 50?

• 50 is a prime number

• 15 is a teen number

• 50 contains the number one

• 15 ends with zero

Which number is pronounced as 'seventy'?

• 70

• 17

• 7

• 77

During the practice session, which number was shown after 30?

• 90

• 16

• 13

• 60