3(a)Number Systems Factors PrimesEasy3 marksFrom this list of numbers, write downa prime numberChoose items…a cube numberChoose items…two numbers with a product of 550Choose items…Grade answerSolutionGrading criteria
3(b)Rishwan writes each of these numbers on a card. Rishwan picks a card at random and replaces it.Card1234567Number-50-11915275083
3(b)(i)Probability Tree Diagrams Conditional ProbabilityEasy1 markFind the probability that he picks a natural number.ProbabilityA72B73C74D75E76F65G52Grade answerGrading criteria
3(b)(ii)Probability Tree Diagrams Conditional ProbabilityEasy1 markHe repeats this 140 times. Find the expected number of times that Rishwan picks a natural number.A40B60C80D100E112F120G140Grade answerGrading criteria