Subject
Quantitative Aptitude
Topic
Number
If x is a positive even number, then each of the following is odd except:
If x is a positive even number, then each of the following is odd except:
ক)
(x+3)(x+5)খ)
x2+5গ)
x2+6x+9ঘ)
3x2+4ঙ)
None of theseExplanation
-(x+3)(x+5): even + odd = odd, তাই (odd × odd) = odd -x²+5: even² = even, তাই (even + odd) = odd -x²+6x+9: even² = even, 6 × even = even, তাই (even + even + odd) = odd -3x²+4: 3 × even² = even, তাই (even + even) = even -None of these *লক্ষ্য করুন, শুধুমাত্র (D) 3x²+4 হল even। বাকি সবগুলি odd। *সুতরাং, সঠিক উত্তর হল (D) 3x²+4।Related questions
The average of four consecutive odd positive integers is alwaysIf n and p are both odd numbers, which of the following must be an even number?If x is not a negative number, what is the maximum possible value of 2-3x?If x and y are both odd integers, which of the following numbers must be an even integer?If m is an even integer and n is an odd integer and both are positive numbers, which of the following must be even?If x and y are positive odd integers and z is an even integer, which one of the following statements cannot be true?If a and b are integers such that a+b=5, which of the following must be true?I. The product of a and b is odd.II. If a is odd then b must be even.III. If a is negative, then b must be positive.If x is an odd integer, in which of the following equations must y be an even integer?I. xy=5 II. x+2y=11 III. 2x+y=12