If (6a + 12) is odd then 'a' would be, a is an Integer

- a)Odd
- b)Even
- c)Cannot be determined
- d)Inconsistent information

Correct answer is option 'D'. Can you explain this answer?

Related Test: Practice Test: Number System (Level 2)

Pargan Lal
answered
Oct 22, 2020

► There are two possibilities for a

► Case 1 : a is even

• 6a = Even x Even = Even

• 6a + 12 = Even + Even = Even

► Case 1 : a is even

• 6a = Even x Even = Even

• 6a + 12 = Even + Even = Even

► Case 2 : a is odd

• 6a = Even x Odd = Even

• 6a + 12 = Even + Even = Even

• 6a = Even x Odd = Even

• 6a + 12 = Even + Even = Even

► In both the cases the answer is even, so the information provided is inconsistent.

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