issb intelligence MCQ #868

Next number: 5, 15, 45, 135, 405, ?

issb intelligence MCQ #868

  1. Question 1

    Q1. Next number: 5, 15, 45, 135, 405, ?

    • A) 810
    • B) 1080
    • C) 1215
    • D) 1350

    Answer: 1215

    Explanation: Multiply by 3 each time so 405 times 3 is 1215. Work each step carefully; ISSB math rewards accuracy under time pressure.