The following marks were obtained by twenty students in a...
The following marks were obtained by twenty students in an examination: 53, 30, 70, 84, 59, 43, 90, 20, 78, 48, 44, 60, 81, 73, 50, 37, 67, 68, 64, 52. Find the numbers of students who scored at least 50 marks
6
10
13
14
Correct answer is D
Number of students scoring at least 50 marks = Number of students scoring 50 and above From the table 53, 70, 84, 59, 90, 60, 81, 73, 50, 37, 67, 68, 64, 52. Hence, 14 students scored at least 50 marks
Marks 2 3 4 5 6 7 8 9 No. of students 3 4 1 0 4 5 2 1 The table above shows the distribut...
Given that y = 1 - 2x4x−3, find the value of x for which y is undefined ...
The area of a circle is 38.5cm2. Find its diameter [take π=227]...
A chord is 5cm from the centre of a circle of diameter 26cm. Find the length of the chord ...
The locus of a point which is equidistant from the line PQ forms a ...
A chord 20cm long subtends an angle of 60° at the circumference of a circle, what is the diamete...