Question

question: 22 consider the following program. which of the following is not a possible output when this runs? function start() { var mysterynum = 10 * randomizer.nextint(2,10); println(mysterynum); } 50 30 10 90

Explanation:

Step1: Analyze Randomizer.nextInt(2,10)

The Randomizer.nextInt(2,10) function returns an integer \( n \) such that \( 2\leq n < 10 \), i.e., \( n\in\{2,3,4,5,6,7,8,9\} \).

Step2: Calculate mysteryNum

Since \( mysteryNum = 10\times n \), when \( n = 2 \), \( mysteryNum=20 \); when \( n = 3 \), \( mysteryNum = 30 \); when \( n=5 \), \( mysteryNum = 50 \); when \( n = 9 \), \( mysteryNum=90 \). But if \( n = 1 \), \( mysteryNum = 10 \), and \( n = 1 \) is not in the range of \( Randomizer.nextInt(2,10) \).

Answer:

10