VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – QUESTION 5 : If Karen starts counting from 1 and goes up in threes : 1, 4, 7, ..., and Anne starts counting at the same time from 101 and goes down in twos at the same rate : 101, 99, 97, ..., they will say the same number together. What is that number?
Answer Posted / kangchuentat
VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – ANSWER 5 : 61, where Karen : Ann = 1 : 101, 4 : 99, 7 : 97, 10 : 95, 13 : 93, 16 : 91, 19 : 89, 22 : 87, 25 : 85, 28 : 83, 31 : 81, 34 : 79, 37 : 77, 40 : 75, 43 : 73, 46 : 71, 49: 69, 52 : 67, 55 : 65, 58 : 63, (61 : 61).
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