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  1. S

    Locus and parabola question

    Ooh, right right thank you! :)
  2. S

    Locus and parabola question

    A circle has centre c(-1,3) and radius 5 units. The first two parts, a) and b) I have already done I'm just stuck on c) a) find the equation of the circle and b) the line 3x-y+1=0 meets the circle at the two points. Find their coordinates C)let the coordinates be x and y, where y is the...
  3. S

    Permutations and Combinations

    oh and the answer is 1/14!
  4. S

    Permutations and Combinations

    How about this question? A family consists of a father, a mother, 3 girls and 4 boys. If the same family is seated randomly at a round table, find the probability that the parents are separated by exactly two seats, and these seats are both occupied by boys? Thanks:)
  5. S

    Permutations and Combinations

    oh yeah. hm, I think you may be right. Okay thanks :)
  7. S

    Permutations and Combinations

    Hi :jump:, Can someone please help me with this question? A girl has 6 pairs of earrings, 3 t-shirts, 2 pairs of jeans and 8 pairs of shoes. If she wishes to choose one of each article, how many ways can she dress up to go out? The answer is 288 Thankyou :)
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