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*Image* see the number of Tiitians!!!! 259487974!!!!!! Nishant bhaiya is great!! ...
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3 numbers are chosen from a set of {1,2,3...4n}...the number of ways of choosing such that the sum of them is divisible by 4..?? ...
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In how many ways can one fill an n x n matrix with ±1 so that the product of the entries in each row and each column equals 1? ...
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Show that there is exactly one value of x satisfying 2cos^{2}(x^{3}+x)=2^{x}+2^{-x} ...
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Find the no. of distinct elements in {(1+ω+ω2+ω3+....+ωn)m :m,n=1,2,3,...} ...
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how to convert wedge-dash to Fisher Projection formula?? plz someone help quick.. ...
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Phenol ,when it first reacts with conc H2SO4and then with conc HNO3gives.... ...
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A Cassegrain telescope uses two mirrors 20 mm apart. radius of curvature of the mirrors 220mm and 140 mm.when object at infinity..final image will be formed at...??? ...
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In how many ways 12 different fruits can be distributed among 3 boys so each receives atleast one? just for confirmation.... ...
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Temperature of a body comes down to 40°C from 50°C in 5 min...in how much time temperature will come down to 30°C...temp of surroundings 20°C.. widout calculator ...
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Find all the solutions of sin5x+cos3x=1 ...
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In Zeigler Natta polymerisation of ethylene what is the active species?? ...
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Out of 46 consecutive integers two are chosen...find the probability that their sum is odd ...
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Al2O3 is reduced by electrolysis at low potentials and high currents.If 4*104A current is passed through molten Al2O3 for 6 hours,mass of aluminium produced.... ...
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What is the angle made by angular moment vector of an electron with z-axis? ...
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I am starting this thread where there will be all the exceptions in chemistry.... plz post here... the exceptions in chemistry u know....grow it up...it may b helpful... i m starting with a simple one....... AgCN is a sparing ...
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An urn A contains 3 white and 5 red balls and another one B has 5 white and 3 red balls.2 balls are transferred from A to B and then 1 is drawn from B.What is the probability that it is red? easy one but i 've a small doubt ...
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What is the application of Grignard reagent in tha preperation of amines? ...
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very very easy things....... 1.what is the name of the compound Ph-NH-NH-Ph? 2.convert: benzene----->CH3CH2CH2CH2-Ph 3.why are phenol and aniline obtained pink and brown in lab? ...
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The no. of ways in which n distinct balls can be put into n distinct boxes so that exactly one box remains empty...is??? ...
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define and tell the relations and differerce between(many of them are same) them magnetic field magnetic field intensity magnetic intensity magnetic field strength H-field Intensity of magnetisation magnetic flux magnetic flu ...
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A worm is crawling on an elastic band that is 20 inches long. Eachday the worm crawls 1 inch. Each evening, a boy stretches the band 10 inches (moving the worm some too). Does the worm ever reach the end of the band? If so, h ...
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A few number of cards were thrown away from a pack of 52 cards. What is the probability that 26 cards were thrown away? ...
