issb intelligence MCQ #911

If 18@19=357 rule a@b=a×b+15. Then 20@21=? (w15)

issb intelligence MCQ #911

  1. Question 1

    Q1. If 18@19=357 rule a@b=a×b+15. Then 20@21=? (w15)

    • A) 433
    • B) 434
    • C) 435
    • D) 436

    Answer: 435

    Explanation: Multiply terms and add 15 to get the answer. Work each step carefully; ISSB math rewards accuracy under time pressure.