Latest TCS Aptitude Question SOLUTION: If m is an odd integer and n is an even integer then which of the following is definitely odd? 1. (2m+n)(m-n) 2. (m+n^2)+(m-n^2) 3. m^2 +mn+n^2 4. m+n

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(#M40010610) TCS question Keep an EYE

If m is an odd integer and n is an even integer then which of the following is definitely odd?
1. (2m+n)(m-n)
2. (m+n^2)+(m-n^2)
3. m^2 +mn+n^2
4. m+n

Asked In TCS tarun narang (11 years ago)

Unsolved Read Solution (8)

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Read Solution (8) :

Surbhi  (11 years ago)

4) m+n should be the ans

Is this solution Helpfull? Yes (16) | No (2)  

Garima  (11 years ago)

3. m^2 +mn+n^2 is also odd.

Is this solution Helpfull? Yes (9) | No (2)  

ashish kumar agarwala  (11 years ago)

its m+n , since odd + even = odd chk usin examples

Is this solution Helpfull? Yes (9) | No (1)  

Jalesingh yadav  (11 years ago)

m+n is right answer(sum of one even and one odd number gives always odd number)

others is why not
1.(2m+n)(m-n) -> multiply by 2 to any odd number it gives even number so (2m+n) is definitely even number and any odd number if multiply by even number result is always even
2.(m+n^2)+(m-n^2) -> is also even number because sum off any two
odd number is always even
difference and addition of any two different(one even or another odd or viceversa) numbers is always odd
3.m^2 + mn + n^2 -> is also an even number

Is this solution Helpfull? Yes (6) | No (7)  

Ashish Singh  (11 years ago)

i think that option 4 is true

Is this solution Helpfull? Yes (4) | No (2)  

ankit singh  (11 years ago)

3.m^2+mn+n^2

let m=3,n=2
so 3^2+3*2+2^2
9+6+4=19

Is this solution Helpfull? Yes (3) | No (1)  

Shreyansh Jain   (11 years ago)

m^2 +mn+n^2

Is this solution Helpfull? Yes (3) | No (1)  

sumathi  (8 years ago)

m+n is odd

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