A. is 4 = {4}?
b. how many elements are in the set (3, 4, 3,5)?
c. how many elements are in the set
{1,{1},{1,{1}}}? ​

Is there a crew with this representative age?

Peanuts are sold in an 8 oz. jars and cashew in 12 oz. jar. what least number of ounces can you buy of each nut to make mixed nuts with equal amount of the two nuts (without remainder)? how many jars of each nuts will you need?

Translate the following to mathematical symbols x the sum of you and nineteen ​