The EXISTS keyword will be true if: Neither of these two conditions is met Any row in the subquery meets the condition only code example

Example 1: Use multiple conditional operators in the checkSign function to check if a number is positive, negative or zero. The function should return "positive", "negative" or "zero".

function checkSign(num) {
  return (num > 0) ? 'positive' : (num < 0) ? 'negative' : 'zero';
}

Example 2: Try out the enumerate function for yourself in this quick exercise. Complete the skip_elements function to return every other element from the list, this time using the enumerate function to check if an element is on an even position or an odd position.

def altElement(a):
    return a[::2]