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Recent questions tagged q13-b

A bag contains 8 red and 5 white balls.Three balls are drawn at random.Find the probability that all the three balls are red

asked Jul 8, 2014 by sreemathi.v

1 answer

Fill in the blanks : $P(A)=0.35,P(A\cap B)=0.25,P(A\cup B)=0.6,P(B)$=__________

asked Jul 1, 2014 by sreemathi.v

1 answer

Determine whether the given planes are parallel or perpendicular, and in case they are neither, then find the angle between them. $(b)\; 2x + y + 3z - 2 = 0 \: and\: x -2y + 5 = 0 $

asked May 22, 2013 by rvidyagovindarajan_1

1 answer

A problem in mathematics is given to three students A,B and C.Their chances of solving the problem are $\large\frac{1}{3}$,$\large\frac{1}{4}$ and $\large\frac{1}{5}$ respectively.Calculate the probability that the problem will be solved.

asked Apr 22, 2013 by sreemathi.v

1 answer

A bag has 4 red and 5 black balls,a second bag has 3 red and 7 black balls.One ball is drawn from the first bag and two from the second.Find the probability that two balls are black and one is red.

asked Apr 19, 2013 by sreemathi.v

0 answers

Find the amount of an ordinary annuity if payment of Rs.600.00 is made at the end of every quarter for 10 years at the rate of 4% per year compounded quarterly?

asked Apr 18, 2013 by sreemathi.v

0 answers

The price of a tape recorder is Rs. 1,561.A person purchases it by paying Rs. 300 in cash and the balance is to be paid with due interest in 3 half yearly equal installments.If the dealer charges interest at the rate of 10% per annum compounded half yearly,find the value of each installment.

asked Apr 17, 2013 by sreemathi.v

0 answers

A person borrowed a sum of money and paid it back in 3 equal annual installments of Rs.2,160 each.If the rate of interest charged is 20% p.a. compounded annually,calculate :(i)The sum borrowed (ii) The total interest charged.

asked Apr 16, 2013 by sreemathi.v

0 answers

Mr.Aggarwal buys a house at Rs. 30,00,000 for which he agrees to make equal payments at the end of each year for 10 years.If money is worth 10% p.a., find the amount of each installment.[Take $(1.1)^{-10}=0.3855]$

asked Apr 15, 2013 by sreemathi.v

0 answers

An iPod is purchased on installment basis,such that Rs. 8,000 is to be paid on the signing of the contract and four yearly installments of Rs. 3000 each,payable at the end of the first,second,third and fourth years.If compound interest is charged at 5% per annum,what would be the cash price of the iPod?(Take $(1.05)^{-4}=0.8227).$

asked Apr 15, 2013 by sreemathi.v

0 answers

At the beginning of each quarter,a sum of Rs. 1,500 is deposited into a savings account that pays 12% per annum compounded quarterly.Find the amount in the account at the end of four years.

asked Apr 12, 2013 by sreemathi.v

0 answers

A manufacturer manufactures two types of tea-cups,A and B.Three machines are needed for manufacturing the tea cups.The time in minutes required for manufacturing each cup on the machines is given below :

asked Apr 11, 2013 by sreemathi.v

1 answer

A machine costs Rs 97,000 and its effective life is estimated to be 12 years.If scrap realises Rs. 2,000 only,what amount should be retained out of profits at the end of each year to accumulate at compound interest of 5% per annum in order to buy a new machine after 12 years?(use $1.05^{12}=1.769$)

asked Apr 10, 2013 by sreemathi.v

0 answers

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