Tyler goes running every 6 days. steve goes running every 9 days. if they both ran today, in how many days will they run together again?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?