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Best Answer
You can't.
You can make an even number if you add 1 to it (82) or subtract 1 from it (80),
but then you've changed the number, and it isn't 81 any more. There's nothing
you can do to 81 to make it an even number.
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∙ 11y agoThis answer is:
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Related questions
Is 81 a even number?
No, 81 is an odd number.
How do you make 81?
It is: (8*10)+1 = 81
What is the prime number of 81 is it even or odd?
81 is an odd composite number.
Is 81 odd or even?
Odd
Does 6 go into 81?
Without remainder, no. 6 is even and 81 is odd, therefore 6 cannot divide 81.
What is 81 of 29?
81 [lots] of 29 make 2349.
What is 9 times 9?
9 x 9 = 81 because if you count 9 times it would make up or be 81
Make a factor tree for 81?
9x9=81. Proving that one of the factor trees for 81 is 9xp.
What numbers multiply to make 81?
9 x 9 = 81 :(
Is 25 plus 56 even or odd?
25 + 56 = 81 81 = odd number
What two numbers make -81?
Negative 9 times 9= Negative 81
Can you make a square from the factors of 81?
9 x 9 = 81 9 squared = 81 3 squared times 3 squared = 81
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