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Question In each of the boxes above, state whether the sums are even or odd. Explain why this is happening.
Box 1: Since, even + odd = odd. Here one number is odd and other is even. So, all sums are odd.
Box 2: Sum of 3 consecutive numbers can be even-odd-even or odd-even-odd. Their sum alternate between even and odd depending on the starting number.
Box 3: The sum of four consecutive numbers i always gives an even number because the total of two odd numbers + two even numbers is always even. So, all sums are even.