When 1 is added to a number and the answer is trebled , it gives the same result as doubling the number and then adding 4, find the number.

Multiplying an even number of negative numbers gives an answer that is choose from:

Can (2,3 and square root 10) be sides ona right triangle?

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?