Kotlin Basic QuizBy Parvesh Sandila / September 15, 2023 Welcome to your Kotlin Basic Questions Name Email 1. What is the output of the following Kotlin program? fun main() { var sum = 0 for (i in 1..10) { sum += i } println(sum) } 10 55 45 15 None 2. How can you define a read-only property in Kotlin? Using the "readonly" keyword Using the "val" keyword Using the "var" keyword Using the "get" keyword None 3. Given the following Kotlin program, what will be the value of result? val x = 5val y = 3val result = x * y 15 3 53 8 None 4. What does the following Kotlin program do? fun main() { var n = 10 var factorial = 1 while (n > 0) { factorial *= n n-- } println(factorial)} Prints the numbers from 10 to 1 in reverse order. Calculates the factorial of 10. Prints the first 10 prime numbers. Calculates the sum of the first 10 numbers. None 5. What is the output of the following Kotlin program? fun main() { var a = 5 var b = 10 a = b.also { b = a } println("After swapping: a = $a, b = $b")} This program will not compile. After swapping: a = 0, b = 0 After swapping: a = 10, b = 5 After swapping: a = 5, b = 10 None 6. What is the output of the following Kotlin program? fun main() { val numbers = arrayOf(1, 2, 3, 4, 5) val sum = numbers.reduce { acc, num -> acc + num } println(sum)} 10 120 3 15 None 7. What is the range operator used to create a range of numbers in Kotlin? :: .. -> -- None 8. What is the entry point of a Kotlin program? run() method execute() function start() function main() function None 9. How do you declare a nullable variable in Kotlin? Using the ! operator Using the # symbol Using the * symbol Using the ? operator None 10. What is the Kotlin equivalent of a "for loop" in other programming languages? while loop foreach loop repeat loop for-in loop None 11. In Kotlin, which keyword is used to declare a variable that cannot be reassigned? val let var const None 12. Given the following Kotlin program, what will be the value of max? val num1 = 10val num2 = 25val num3 = 15val max = if (num1 >= num2 && num1 >= num3) num1else if (num2 >= num1 && num2 >= num3) num2else num3 30 15 25 10 None 13. In Kotlin, which collection type represents an ordered list of elements? Map Set Array List None 14. What is the output of the following Kotlin program? fun main() { var fib1 = 0 var fib2 = 1 for (i in 1..10) { print("$fib1, ") val next = fib1 + fib2 fib1 = fib2 fib2 = next }} This program will not compile. 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, None 15. In Kotlin, what is the purpose of the "fun" keyword? It stands for "funny" It defines a new data type It declares a function It specifies a variable's data type None 1 out of 15
