A spinner is divided into 3 equal parts. 1/3 being blue 2/3 being red. work out the probability of the spinner landing on red twice and the spinner landing on the same colour twice

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?