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Practice Databased Questions and Answers

In Delhi Public School, what is the respective ratio between the total number of participants (both boys and girls) who participates in ‘Tennis’ and th...
Supporters of Mumbai in the crowd finally is approximately what percent of the initial number of supporters of Pune in the beginning at 8.00 pm?
Supporters of Pune in the crowd finally is approximately how much percent less or more than the number of Pune supporters who left after the match was dela...
Which of the following statement is not true? I.At every point of time, number of Mumbai fans was more than the number of Pune fans. II. Ratio between the ...
What is the difference between the Mumbai and Pune supporters after the match was restarted?
What would have been ratio of the supporters of Mumbai and Pune at 10.00 pm initially before the new arrivals, if those 30% of the supporters came back wer...
Suppose that the reliability of a COVID test is specified as follows: Of people having COVID, 90% of the test detect the disease but 10% go undetected. O...
Find the approximate value of (81.5)1/4
Find the angle between the lines whose direction ratios are a, b, c and b − c, c − a, a − b.
If O is the origin and the coordinates of P are (2, 3, −4), then find the equation of the plane passing through P and perpendicular to OP.
A football team plays 60 matches in a tournament. Where 5 points are given to a team for winning a match and 2 points are subtracted for losing every mat...

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