darkhorse87's posts

darkhorse87
replied to The PaGaLGuY Dream Team 2011

As seba mentioned, i thnk it is safe to assume the 10 numbers are distinct..Also if u look at it the other way, in the list the odd nos are tabulated just once.. I hope what i have done is right

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darkhorse87
replied to The PaGaLGuY Dream Team 2011

consider the first 100 odd numbers: 1,3,5....199

The sum of first 10 odd numbers( i.e 1+3+5....19) = 10 + 45x2 = 100 ( min value)

The sum of last 10 odd nos ( i.e 181 + 183...199) = 10 + 945x2 = 1900( max value)

now any other value of the sum will lie betwn 100 and 1900 at a difference o...

The sum of first 10 odd numbers( i.e 1+3+5....19) = 10 + 45x2 = 100 ( min value)

The sum of last 10 odd nos ( i.e 181 + 183...199) = 10 + 945x2 = 1900( max value)

now any other value of the sum will lie betwn 100 and 1900 at a difference o...

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darkhorse87
replied to The SHout BoXeRs Team 2011

Q. If N = 2^3 x 3^2 x 5^3 then find the number of co-prime triplets (a,b,c) where a, b & c are factors of N.

Don have th OA..pl. share the approach..

Don have th OA..pl. share the approach..

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darkhorse87
replied to Quant by Arun Sharma

hi puys!!

i have a problem in average and alligations chapter of Arun sharma ...Please help me solve it

Three groups of companies : tata, birla and reliance announce the average of the annual profit for all years since their establishment.

The avg profit of tata is Rs. 75000 lakhs

Th...

i have a problem in average and alligations chapter of Arun sharma ...Please help me solve it

Three groups of companies : tata, birla and reliance announce the average of the annual profit for all years since their establishment.

The avg profit of tata is Rs. 75000 lakhs

Th...

darkhorse87
replied to Official Quant Thread for CAT 2011 [Part 4]

@emanresu

the answer to ur question is "a"

All the roots range from 1 to 2 as given in the q.

so if a= -3.3, the sum of the roots is 3..now the only way to check the combination of all values of a and c is by using maxima and minima of equations...all the options satisfy the maxima condi...

the answer to ur question is "a"

All the roots range from 1 to 2 as given in the q.

so if a= -3.3, the sum of the roots is 3..now the only way to check the combination of all values of a and c is by using maxima and minima of equations...all the options satisfy the maxima condi...