Well, for this to happen, the boards should me made far tougher than they are now.

Fiitjee, Fiitjee & Fiitjee all the way.....................Its simply the best...........................

NCERT is a waste,,,,,,,,,,,,,,, to be honest. Its only made for HS Exams. Has no use for Entrances,,,,,,,,,,,,,,,,NCERT Books should be sent 2 jail,,,,,,,,,,

Without knowing the initial distance of separation between A & B, this question can't be solved. Please check the question again.

We know, a,b,c,d are in AP

                 =>d,c,b,a are in AP

                 Dividing each of these terms by abcd, we have,

                                                                                                     => their reciprocals are in HP.

                                    Well, I think there is a third term missing in your question dude.

                                  I think this should be the correct sequence.

The total work done on a body(by all external as well as internal forces) is always equal to the change in the body's Kinetic Energy.This is the Work-Energy theorem and you can apply this theorem anywhere in space provided you take into account all the forces.

Don't worry bro, you're on the right track..............P.Bahadur is the best.......................

The respective coordinates of the points are (60,3), (40,-8) and (a,-52). So if they are collinear, then area of the triangle formed by them is              0 sq units.

i.e.Apply the formula for area of a triangle and equate with 0 to get the answer.

I apologise for my previous post. I was counting squares and forgot that Debmalya was actually giviing the number of lines. His method is absolutely correct

This is the correct explaination

Let T(final) be the temperature at thermal equlibrium.

By Principle of Calorimetry,

So if T(final) = (T1+T2)/2, then MS = ms, where M,m are the masses of the bodies and S,s are their respective specific heats, which always may not be the case.

A chessboard consists of 64 squares(8*8).I guess u will solve the rest.........................Be it Debmalya's method or theory of 9 lines, both are wrong.................

Well, they say "LOOK BEFORE YOU LEAP"................And Nihal, I have one advice for u:-

                                          "THINK BEFORE YOU LIE AT GOIIT".....................coz the gonnabe iitians like me will definitely catch you

Since they all are positive real numbers, a more accurate answer would be 0<m<1

Hey Buddy plz check the question..........Its CE or CF.?????...I think its CE...........

 How much do u think u can solve........................I mean its not that u have to study only physics............How will u get time to solve 3 or 4 books(that too only physics)...................Huhhhhhhh

 Correct

 Let us consider the trigonometric equation:-

sinx = mod cosx

It is being asked to calculate the number of solutions of this equation in the interval (0,4pi).

Now there are two ways to solve this equation.

1)Firstly, considering two graphs y = sinx & y = mod cosx, the number of points in (0,4pi) where these graphs intersect is 4. Hence the number of solutions is 4.

2)We may write the equation as sinx = +-cosx. Dividing LHS and RHS by cosx (Here, cosx can't be 0 as when cosx =0, sinx =1 or -1 which isn't possible as sinx = mod cosx) , we have, tanx = +-1

Now, tanx =+-1 gives 8 solutions in (0,4pi) which contradicts the first method.

Can u point out the flaw in the second method?!!!!!!

 HAHAHAHAHAHAHAHAHA................I Like being naughty..................By the way, wats ur question dude?