If n+1 integers are chosen from the set 1,2,3,…,2n
,where n is a positive integer, must at least one of them be even? Why?

Pigeonhole Principle

Step-by-step explanation:

From series {1,22n} ; we need to select 'n + 1' integers.

Even integers series from above series = {2,4,62(n-1), 2n}

Odd integers series from above series = {1,3,52(n-2), 2n-1}

So, we can choose only n odd integers from the series. Hence, if we choose n+1 integers, atleast one of them have to be even integer.

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

not me

step-by-step explanation:

i wish i did i would like to get a desert ghost ball python