What is a tripizium?

The number which best complets the sequence 2 6 3 8 6 12? What is the probability of a coin tossed 3 times to get 3 heads? What is the fraction of 25 centavo in 75 centavo? What is fractional notation for 5.4? What is the product of the rational expressions below APEX? How do you make 80 in to a fraction? What are the factors of 49 84 91? How many feet are in liner feet? 40 50 in simplest form in fractions? 2 circular faces and a curved surface? What is the circumference of 5.4cm? How much 4497 million is equal to billion? How many centimeters are there in three quarters of 6 metres? How many hundredths is one third? What is the name of face features? What is 5x2 equals math? Did Albert Einstein work with anyone? What number is nought point eight less than nine? How many tons of dirt to fill 100 sf? How do you use an ordered pair?