Question

Can you explain me atmospheric pressure little bit more because I am still confuse 

1Q.     Mary wants to decorate her Christmas tree .She wants to place the tree on a wooden box covered with coloured paper with Picture of Santa Claus on it She must know the exact quantity of paper to buy for this purpose.if the box has length,breadth and height as80cm,40cm,and 20 respectively how many square sheets of paper of side 40cm would she require?

Fi

Convert -4 into degrees

Less than x and y

Question 3 video
. Exercise 7 A 

If A=2  -1  3 ,B=  -3  2  -1 then find AB abd BA. 
          -3  2  0            0  5  2 
          5  1  -1           1  -2  1
 Is AB=BA ?

Is matter around us

Prove that the sine function is everywhere continuous

• Show that (2x 4)2-32x-(2x-4)2
  

Why a b c is a triangle 

On one page of a telephone directory, were 200 telephone numbers. The frequency distribution of their unit place digit (for example, in the number 25828573,the unit place digit is 3) is given in the following table:

A coin is tossed 20 times in which head turnup 13 times.what is the probability of getting a tail in the next toss?

Q-2 ka

Question no.8