Q#01: For the data given below 2,4,5,6,12,19,21,10,2 Calculate Lower quartile and median.
Q#02: Calculate coefficient of range for the data in 37,80,82,41,49,60,38,61,64,29.
Q#03: A box contain 15 pencils of same shape and size, but with different colors, 3 of them are of black, 6 white, 2 red and 4 yellow. Two pencils are drawn at random.
Find the probability that: they are
(i) black or white
(ii) One red and other black