Which of the following is not a subset of the set shown below?
{1,2,3,4,5}
a.{1,3,4,5] b.{1,2,4} c.{6,7,8} d.{1,2,3,4,5}

How do you find principle and simple interest

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree