8th Class Mathematics Data Handling

  • question_answer 1)
                    Numbers 1 to 10 are written on ten separate slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of. (i) getting a number 6? (ii) getting a number less than 6? (iii) getting a number greater than 6? (iv) getting a 1-digit number?

    Answer:

                    There are all 10 outcomes of the event. (i) Getting a number 6 has 1 outcome only. So, the probability of getting a number \[6=\frac{1}{10}\]. (ii) Probability of getting a number less \[6=\frac{5}{10}=\frac{1}{2}\] |Getting a number less than 6 has five outcomes as there are five numbers (1, 2, 3, 4 and 5) less than 6 (iii) Probability of getting a number greater than 6 \[=\frac{4}{10}=\frac{2}{5}\] |Getting a number greater than 6 has four outcomes as there are four numbers (7, 8, 9 and 10) greater than 6 (iv) Probability of getting a 1-digit number \[=\frac{9}{10}\] |Getting a 1-digit number has nine outcomes as there are nine number (1, 2, 3, 4, 5, 6, 7, 8 and 9) of 1-digit


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