11th Maths Chapter 9 Miscellaneous Exercise Question 25 to 32

Class 12 ncert maths solution chapter vector algebra exercise 10.2 Qno.4,5

An ellipse has point (1,-1)a n d(2,-1) as its foci and x+y-5=0 as one of its tangents. Then the point where this line touches the ellipse is (a) ((32)/9,(22)/9) (b) ((23)/9,2/9) (c) ((34)/9,(11)/9) (d) none of these

A national math examination has 4 statics problems. The distribution of the number of students who ansered the question correctly is shown in the chart. If 400 students took the exam and each question was worth 25 points, then what is the average score of the students taking the exam? {:("Question Number","Number of students who solved the question"),(1,200),(2,304),(3,350),(4,250):}

A particle moving with a constant acceleration describes in the last second of its motion 9/25th of the whole distance. If it starts from rest, how long is the particle in motion and through what distance does it move if it describes 6 cm in the first sec.?

Find the 11th term form the beginning and the 11th term form the end of the expansion of (2x-1/(x^2))^(25)dot

Find the 11th term from the end in the expansion of (2x-1/(x^2))^(25)dot

The coefficient of 11^(th) term from end in the expansion of (2x - (1)/(x^(2)))^(25) is

The mean of 25 observation is 36 . Out of these observations, if the mean of first 13 observations is 32 and that of the last 13 observations is 40 , the 13th observation is