Picking balls from a bag — XAT Previous-Year Questions
1 previous-year question on Picking balls from a bag from XAT, with full solutions. Practise free — check answers as you go; sign in to save your progress.
Picking balls from a bag · XAT PYQs
Read the following scenario and answer the THREE questions that follow.
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The given candlestick chart depicts the prices of a particular stock over 10 consecutive days. A candlestick comprises of a rectangular box pieced by a line. The top and bottom ends of the line respectively indicate the maximum and minimum prices of the stock on that day, while the horizontal edges of the rectangle correspond to the stock's opening and closing prices. If the rectangle is white, the opening price is lower than the closing price, but if the rectangle is black, then it is the other way around.
Using the above information, answer the questions that follow:
I have five 10-rupee notes, three 20-rupee notes, and two 50-rupee notes in my wallet.
If three notes were taken out randomly and simultaneously, what is the probability that at least 90 rupees were taken out?