Recently Active Miscellaneous Questions

A fair coin is tossed n times. What is the probability that heads do not appear on consecutive tosses? I am giving this question as a continuation of the Tiling of the floor.. (to see how many of you understood the idea) ...

i have obc certificate if i apply for reservation is it compusory that v should consider only obc ranking for admission......??????? or even if v apply will i be having option to go in ge category (during admission )depending ...

hi everyone ! i was of the opinion that we can handle inorganic chemistry for coming year's JEE in a different way ! all of us have observed the questions in the recent 5 years JEE papers ! so, what we can do is collect bits ...

One lady who made a living by selling eggs had 90 eggs which she wanted to sell, so she sent her three daughters to the market, giving 10 eggs to her eldest and cleverest daughter, 30 to the second and 50 to the third. 'You'd ...

Can u experts upload a few full-length tests (IIT-JEE pattern) in pdf format here? I'd like to make them downloadable, bcoz taking online tests does not really give u the JEE-experience...... It'd be gr8 if u guys can manage ...

Q.1) If 3 tan^-^1 [1/(2+\sqrt{3})] - tan^-^1(1/x) = tan^-^1(1/3) , then x equals : a) 1 b) 2 c)3 d) √3 here , [] doesn't mean greatest integer function. Q,2) How can polarisation of acrolein be expressed ? acrolein : CH2=CH ...

Does anyone have sufficient material about Back bonding online? What is all this pπ-pπ and dπ-dπ?? ...

Assume that the day began 10-12 hrs late.. i forgot to post the question today! here it is in a hurrry.. i modified a question of irodov.. Dont have a final solution .. but the fearless and the conceptful should give it a sho ...

do any of u have a simple C++ program on railway reservation using data base handling that does not use codes like "gotoxy n oder codes not in CBSE sylabus.." then do leave me a scrap...:)//thak u... ...

i first thought of applying online and so i have opened my id in jee website(but not sent the application nor paid the fee) but now i want to apply by off line so tell me will thr be any problem for me if have just id?????? ...

three missionaries and three cannibals need to cross a river in a boat that can hold only two people.the missionaries must be careful to never allow the cannibals to outnumber them on either shore. how can everyone cross the ...

Cosider and tell what's wrong here..... -20 = -20 -36 +16 = -45 + 25 -81 +16 + 81/4 = -45 +25 + 81/4 (4 - 9/2 )2 = (5 - 9/2 )2 4 = 5 which is not possible..... ...

Here's the puzzle: A group of people live on an island. They are all perfect logicians -- if a conclusion can be logically deduced, they will do it instantly. No one knows the color of their eyes. Every night at midnight, a f ...

There are2 black hats and 3 white hats on a table. 3 men stand in a line such that the 3rd man can see the heads of the 2 bfore him, the 2nd can see the one bfore him only, and the 1st can see none. Another man came and rando ...

Draw the graph of {y} = [sin x] fractional part of y equal to greatest integer of sin x ...

Draw the graph of [y] = [sin x] ...

Draw the graph of y=[[sin x]]+[[cos x]] There are nested greatest integers [1] ...

ex=x2+1 Solve this one rigorously. I dont want any short cuts or half attempts. Ideally this could fit into Graph of the day section.. But I thought that this is not a bad place either. ...

A small object loops a vertical loop in which a symmetrical section of angle 2a has been removed. Find the maximum and minimum heights from which the object, after loosing contact with the loop at point A and flying through t ...

y= sin πx + sin π{x} where {} denotes fractional part of x ...

If α,β and γ are the real roots of the equation x3 – 3px2 + 3qx – 1 = 0, then the centroid of the triangle with vertices (α,1/α) , (β,1/β) and (γ,1/γ) is: I guess one of the easier QOD's ...

using graphs or otherwise, find the number of solutions of log10x = sin x (someone asked this to me yesterday) ...

An easy one after a long long time? y = sin (3x) + cos (2x) ...

p, q, r are the roots of ax^3+bx^2+cx+d=0 find the cubic equation whose roots are p^3+\frac{b}{a}\times p^2, q^3+\frac{b}{a}\times q^2 \text{ and } r^3+\frac{b}{a}\times r^2 This one is from FIITJEE AITS.. ...

Express the Determinant below as a polynomial in alpha's \begin{bmatrix} 1 & \alpha_1 & \alpha_1^2 & \dots & \alpha_1^{n-1}\\ 1 & \alpha_2 & \alpha_2^2 & \dots & \alpha_2^{n-1}\\ 1 & \alpha_3 & \alpha_3^2 & \dots & \alpha_3^{ ...

An easy one after a long long time? y = sin2(x) + sin (x) ...

nishant sir where are u these dayz.... we need u here sir... many questions are unsolved... and we miss ur question of the days and graphs..... atleast i do.... ...

Why all the psots are not in descending order ???and one posts shows -4 sec [11][11][3][3] *Image* ...

hey any one knows free online video tutorails fot iit??? ...

hey any one knows free online video tutorails fot iit??? ...