1.Every shape with four angles is a square. 2.If a real number is not negative, then it is positive.
Provide a counterexample for the following statement:
1.Every shape with four angles is a square.
2.If a real number is not negative, then it is positive.
3.All people with brown hair have brown eyes or are short.
4.If a and b are integers where a is divisible by b and b is divisible by a, then a is equal to b.
5.If n-squared is greater than zero, then n is greater than zero.
6.If n is an even number, then n2 + 1 is a prime number.
7.If n is an integer that is positive, then n3 is greater than n-factorial.
8.The result of 3n + 5 is an even integer if and only if n is an odd integer.
9.The result of 3n + 2 is an even integer if and only if the number n is an even integer.
10.
Find two even integers whose sum is not a multiple of 4.
In other words, the result of n1 + n2 is not divisible by 4.
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