Let [x] denote the greatest integer function. What is the number of solutions of the equation x² – 4x + [x] = 0 in the interval [0, 2]?

A train covers the first 5 km of its journey at a speed of 30…

The mean and standard deviation of a set of values are 5 and 2 respectively.…

In a test in Mathematics, 20% of the students obtained “first class”. If the data…

What is the median of the numbers 4·6, 9·0, 9·3, -4·8, 7·6, 2·3, 12·7, 3·5,…

Consider the following statements : 1.The sum of deviations from mean is always zero. 2.The…