Class 7 Exam > Class 7 Questions > What type of number is (2x + 1)? [odd or even...
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What type of number is (2x + 1)? [odd or even].
- a)Even
- b)Odd
- c)Zero
- d)One
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
What type of number is (2x + 1)? [odd or even].a)Evenb)Oddc)Zerod)OneC...
Explanation:
An even number is a number that is divisible by 2, while an odd number is a number that is not divisible by 2.
To determine the type of number that (2x + 1) is, we need to consider the value of x.
If x is even, then 2x is also even, and adding 1 to an even number results in an odd number. Therefore, (2x + 1) is odd.
If x is odd, then 2x is even, and adding 1 to an even number results in an odd number. Therefore, (2x + 1) is odd.
Since (2x + 1) is odd for all values of x, the correct answer is option B, odd.
An even number is a number that is divisible by 2, while an odd number is a number that is not divisible by 2.
To determine the type of number that (2x + 1) is, we need to consider the value of x.
If x is even, then 2x is also even, and adding 1 to an even number results in an odd number. Therefore, (2x + 1) is odd.
If x is odd, then 2x is even, and adding 1 to an even number results in an odd number. Therefore, (2x + 1) is odd.
Since (2x + 1) is odd for all values of x, the correct answer is option B, odd.
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Community Answer
What type of number is (2x + 1)? [odd or even].a)Evenb)Oddc)Zerod)OneC...
Taking x to be an odd number, 1.
2(1) + 1 = 2 +1 = 3
apply same for odd number, 3.
2(3) + 1 = 6 +1 = 7
taking x be an even number, 2.
2(2) + 1 = 4 + 1 =5
for even number, 4,
2(4) + 1 = 8 + 1 = 9
Also, 2 multiply an even number equals even number; an even number plus 1 equals odd.
2 multiply any odd number is even number. Even + 1 = Odd.
2(1) + 1 = 2 +1 = 3
apply same for odd number, 3.
2(3) + 1 = 6 +1 = 7
taking x be an even number, 2.
2(2) + 1 = 4 + 1 =5
for even number, 4,
2(4) + 1 = 8 + 1 = 9
Also, 2 multiply an even number equals even number; an even number plus 1 equals odd.
2 multiply any odd number is even number. Even + 1 = Odd.
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