issb intelligence MCQ #409

Next number: 4, 9, 19, 39, ?

issb intelligence MCQ #409

  1. Question 1

    Q1. Next number: 4, 9, 19, 39, ?

    • A) 59
    • B) 69
    • C) 79
    • D) 89

    Answer: 79

    Explanation: Pattern doubles and adds 1 so 39 times 2 plus 1 is 79.