Choose the appropriate symbol form < or > between 15 and 13.

The successor of 999 is 

Additive identity for whole numbers is 

Which of the following will not represent zero.

Division by zero is 

Express 17 x 28 using distributive property. 

This number in the set of natural numbers has no predecessor 

The following number can be shown as square .

The successor of 21 is 

3+4=7; 4+3=7 . This property is known as