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Subject: Math, asked on 24/1/16

An unbiased coin is tossed 'n' times . Let the random variable X denote the number of times the head occurs . if P(X=1) ,P(X=2) and P(X=3) are in A.P , find the value of n.

Subject: Math, asked on 12/9/17

The set of displacement which are not capable of bringing a particle to its returning point are

Subject: Math, asked on 7/8/16

if A is a non singular matrices of order 3 and /A/ =-3 find /adj A/

Subject: Math, asked on 19/1/20

Chords BA and DC of a circle intersect externally at P. If AB = 7 cm, CD = 6 cm and PC = 1 cm, then the length of PB is ______.

Subject: Math, asked on 31/5/16

find the value of 

|1           1            1                       |
|nc1            n+2c1      n+4c1          |
|nc2          n+2c2      n+4c2           | 

Subject: Math, asked on 25/9/17

Q.13. A ball is thrown vertically upwards in air. If the air resistance cannot be neglected (assume it to be
directly proportional to velocity), then the acceleration of the ball at the highest point will be:
(1) 0
(2) g
(3) > g
(4) < g

Subject: Math, asked on 23/4/18

7) In a bolts factory, machines I, II and III manufacture 60 %, 25 % and 15 % respectively. Of the total of their output 1 % , 2 %, 1 % are defective bolts.  A bolts is drawn at random from the total production and is found to be defective. What are the probabilities that it was manufactured by machines I, II, III.

Subject: Math, asked on 13/8/15

find the dimensions of the rectangles of largest area that can be inscribed in a circle of Radius a

Subject: Math, asked on 31/7/20

The probability that a number selected at random between 100 and 999 ( both inclusive ) will not contain a digit 7 ?

Subject: Math, asked on 24/11/15

 integration of root tanx ?

Subject: Math, asked on 22/10/15

find the area bounded by the parabola x=8+2y-y^2 ; the y- axis and the lines y= -1 and y=3 .

Raj
Subject: Math, asked on 24/7/16

solve the diff.equation dy/dx=y-2sinx

Subject: Math, asked on 12/9/16

The perimeter of a triangle is 8 cm. If one of the sides is 3 cm , what are the other two sides for the area of the triangle to be maximum 

Subject: Math, asked on 28/7/16

If x = cost + logtant/2 and y = sint, then find the values of d^2y/dt^2 and d^2y/dx^2 at t = pie/4

Subject: Math, asked on 13/2/12

can we prove 4+5+5=450.

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