The grades of 36 students in a class test are as shown in...
The grades of 36 students in a class test are as shown in the pie chart. How many student has excellent?
7
8
9
12
Correct answer is A
degree of excellent in the pie-chart = 360o - (90o + 120o + 80o) = 360o - 290o = 70o
= 360o = 36 students
70 = 70o360o x 36 = 7
In how many ways can 6 subjects be selected from 10 subjects for an examination ...
For what values of x is the curve y = x2+3x+4 decreasing?...
Find the mean of the numbers 1, 3, 4, 8, 8, 4 and 7 ...
If y=x(x4+x+1), evaluate 1∫0ydx....
Solve the pair of equation for x and y respectively \(2x^{-1} - 3y^{-1} = 4; 4x^{-1} + y^{...
Find the next two terms of the sequence 1, 5, 14, 30, 55, ......