In a survey, it is found that the ratio of the people who liked modern songs and folk songs is 8:9.Out of which 50people liked both songs,40 liked folk songs and only and 80 liked non of the songs. -present the above information in venn diagram .
-the number of people who participated in the survey.​

Which mathematical statements are true? 1) if 3 is an odd number, then 3 times 3 is an even number. 2) if 6 is less than 7, then 4 is greater than 7. 3) six is divisible by 3, and 10 is a multiple of 2. 4) the average of the data is greater than the largest value in the data, or it’s less than the largest value in the data. 5) the slope of a linear graph is its rate of change, and the graph’s y-intercept is the initial value. 6) if an equilateral triangle has equal angles, then all its angles will measure 45°.