CAT4MBA

Guys don’t you think the answer to Q21 should be

 e. Cannot be determined

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because as per the question ?_i=1ⁿ X_i = X₁ *  X₂  * X₃

and the question asks about  xⁱ – yⁱ not about x_i – y_i

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Anyhow my scores are

DI : 38

Qunat : 34+

EU : 27

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Total : 99

RC Sources:

Passage 1: Finding Clues in the Sky In 2004, the Olympics were once again held in Athens, and once again runners in Greece took the approximate route

The article was published on tims.com Passage I

Passage 2: The science of music Music seems to make no sense. It comes from nowhere and goes nowhere.

Taken from the article @ Passage II

Passage 3:what is about coffee – and coffeehouses – that makes it so agreeable to the bourgeoisie Passge 3 : No coffee

Get the complete article @ Passage III

Thanks!!! Nisht

If you could have given these links before the exam

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@ searchin –life

You have a point.

I think it should be none of the above

I feel the solution given is incomplete

The eqn is x² + (2a +1) x + (a² + 1) =0

For the above eqn to have a solution
(2a +1) ²   ≥ 4 (a² + 1)

=> 4 a²  +  4a + 1 ≥ 4 a² + 4

=> 4a + 1  ≥  4

 that means a >0

right , that means the answer should be none of the above. . .

or am I making any mistake

My scores are not that good. . don’t think will clear the cutoffs

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DI : 38

EU: 23

Quants : 18

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Total : 79 Horrible

@ secondharsa

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read the question carefully

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it is written as the equation has positive roots

and what you are calculating is positive real roots.

No where its mentioned that the roots cant be complex positive roots.

Please revert back if you still have any doubt

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Hey Nishit !!!

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Thanks for the Clarification

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It was my mistake indeed . . .

Solution 24 is confusing

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Q24.  A number, when written in base 16 notations, contains only three 0s and there 1s and no other digits. Find the maximum number of zeroes in the base 2 notation of that numbers.

ANS:  18

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Why only the highest and lowest numbers are considered

Why are not we considering some thing like 101100 / 110100. . .etc

How many 1’s are there in their binary representation . . .

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Please clarify

The solution should have mentioned that

Number of 1’s in base 16 = Number of 1’s in base 2

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So it’s about calculating maximum number of digits in base 2

And maximum number of 1’s in base 2 = Maximum number of digits in base 2 – 3

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For example consider 110100 = 16⁵ + 16⁴ + 16² = 1114368 = 2²⁰ + 2¹⁶ + 2⁸ 

        = (100010000000100000000)₂

It does not matter where you put the 1 in the base 16 numbers. . .there 'll be only three 1's in the equivalnt base 2 number.

As the maximum possible digits for given case is for (111000)₁₆ = 16⁵ + 16⁴ + 16³  is 21

Number of zeros = 21 - 3 = 18

Any how my scores are DI : 24 Quant: 19 EU : 38 Total : 81