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q.log₄x=3/2, then log₂(x²+1/65x)=?

Q.The mass of 2.46lt of methane at 1.5 atm pressure and 27degree centigrade is?

This is a very easy problem but i am not able to get a solution for this one.

Q.200c.c.of a gas weighs 0.268g at STP .the vapour density of the gas is?

i proceeded the sum using the method molecular wt = 2*Vapour density but my answer was wrong and i did not make use of the volume given.

Please note:in the above question it is x to the power of 2 and not 2x...

Q.(15+4^{[ ]}

14)^x2-7x+11+(15-4^{[ ]}

14)^x2-7x+11=30.then the no.of real values of x are?

Q.The odds in favour of A winning the game of chess against B is 5:2 .if 3 games are played then the odds in favour of A in winning at least one game is?

well the answer is given as 1\3...can someone help me out??

Q.The weight of KMnO₄ that can oxidise 100ml of 0.2 M oxalic acid in acidic medium is?

Q.The molarity of 200ml HCl solution which can neutralize 10.6 grams of anhydrous Na₂CO₃is?

Q.Two persons and A and B toss 2 coins one after the other.The person who throws one head and one tail is the winner .If A starts the game then the probability that B wins the game is?

Q.A,B,C are aimimg to shoot a balloon.A will succeed 4 times out of 5 attempts.The chance of B to shoot the balloon is 3 out of 4 and that of C is 2 out of 3.if 3 aim the balloon simultaneously , the probability that at least 2 of them hitting the balloon is?

well..the above problem comes under the conditional theorem of probability..can some help me out with it?

Q.The odds that a book is reviewed favourably by 3 independent critics are 5:2,4:3 and 3:4 respectively.then the probability that out of 3 reviews,a majority will be favourable is?

Q.Total probability:

One bag A contains 5 white and 3 black balls.Another bag B contains 6 white and 2 black balls.A card is drawn from a pack of cards.If it is a club card,a ball is drawn from bag A.If it is a red card a ball is drawn from bag B.Otherwise keeps quiet.The probability of getting a white ball is?

Q.A bag contains n coins of which 5 of them are counterfeit with heads on both sides and the rest are fair coins.If one coin is selected from the bag and tossed .if the probability of getting head is 5\8 then n=?