Complete the following statements :
The probability of an event that cannot happen is ________ . Such an even is called ________ .

Complete the following statements : The probability of an event that cannot happen is _______ Such an event is called

Complete the following statements: The probability of an event that cannot happen is__________. Such an event is called __________

Complete the following statement: The probability of an event that cannot happen is _______. Such an event is called _______

Complete the following statements: The probability of an event that cannot happen is_______. Such as event is called an_________.

Complete the following statement: The probability ofan event that cannot happen is _______. Such an event is called _______

Complete the following statement: The probability ofan event that cannot happen is _______. Such an event is called _______

Complete the following statement: The probability of an event that is certain to happen is ______. Such an event is called _______

Complete the following statement: The probability of an event that is certain to happen is ______. Such an event is called _______

Complete the following statement: The probability of an event that is certain to happen is ______. Such an event is called _______

Complete the following statements : The probability of an event that is certain to happen is _________ . Such an event is called _________ .