CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING)
CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING)
This is a discussion on CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) within the Quant forums, part of the CAT, XAT, MAT, CET, JMET and other Indian MBA Entrance Exams category; 1] NUMBERS AND VBODMAS RULE :-
1) If l a l > l b l and a < b, then ...
CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
1] NUMBERS AND VBODMAS RULE :-
1) If l a l > l b l and a < b, then which of the following is true?
1. a > 0 2. b > 0 3. a < o 4. b > l a l
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Re: CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
Another question.........................
2) If a > 0, b > 0 , then , the relation between l a - b l and l b - a l is :-
1. l a - b l < l b - a l
2. l a - b l > l b - a l
3. l a - b l = l b - a l
4. can not be determined.
Plz give solution for these 2 questions...!
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Re: CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
Quote:
Originally Posted by rahul_parab2006
1] NUMBERS AND VBODMAS RULE :-
1) If l a l > l b l and a < b, then which of the following is true?
1. a > 0 2. b > 0 3. a < o 4. b > l a l
The correct answer is 'c' a<0
There might be direct method to solve, but i followed this approach.
Since we've |a|>|b| and a<b, it is obvious that the values of a and b should be -ve
Now assume that a= -2 and b =-1 (should satisfy the conditions)
So immediately, our case is solved and we get the answer. Take, any other value, the conditions wont be met. Moreover the magnitude of a should be more than b. Hence (a,b) can't even have (1,0) value too.
I hope this is enough. Please let me know if there are any errors.
Regards,
Gaurav Mittal
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Last edited by gaurav200x; August 20th, 2006 at 07:51 PM..
Re: CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
answers for -
Q.1) - 3. a < 0 [ gaurav is correct]
Q.2) - 3. l a - b l = l b - a l [venky, mistake, wrong answer !!!]
but plz ne1 give solutions for this...!
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Re: CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
3) Fill in the table with appropriate numbers using the concepts of base conversion :-
check out the file, it's just 1 question,-
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Re: CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
Quote:
Originally Posted by rahul_parab2006
Another question.........................
2) If a > 0, b > 0 , then , the relation between l a - b l and l b - a l is :-
1. l a - b l < l b - a l
2. l a - b l > l b - a l
3. l a - b l = l b - a l
4. can not be determined.
Plz give solution for these 2 questions...!
The easiest method to solve this one is by giving values to a and b
The correct answer is C
Regards,
Gaurav Mittal
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Re: CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
4) A positive number 'n', when divided by 88 gives the remainder 8. What will be the remainder when, this number is divided by 11?
a. 3
b. 4
c. 1
d. 8
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Re: CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
another 1...
PRIME AND COMPOSITE NUMBERS
5) If a and b are two prime numbers, then, a + b can take value :-
1. 78
2. 7
3. 23
Options :
a} 1 Only
b} 2 Only
3} 1 & 2 only
4} 2 & 3 Only
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Last edited by rahul_parab2006; August 20th, 2006 at 08:24 PM..
Re: CRACK THE CAT - DOUBT OVER MATHS (PROBLEM SOLVING) -
August 20th, 2006
Quote:
Originally Posted by rahul_parab2006
4) A positive number 'n', when divided by 88 gives the remainder 8. What will be the remainder when, this number is divided by 11?
a. 3
b. 4
c. 1
d. 8
The no. can be formed from the 1st statement. = 88k + 8
Now, we have to find the reminder of no./11
i.e. (88k+8)/11
The resultant reminder shall be the sum of the reminder of the two terms. Hence, the first term's reminder is 0 and the 2nd term, give the reminder as 8
Regards,
Gaurav Mittal
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