issb mathematics MCQ #92

What is the smallest four-digit number divisible by both 15 and 20?

issb mathematics MCQ #92

  1. Question 1

    Q1. What is the smallest four-digit number divisible by both 15 and 20?

    • A) 1005
    • B) 1020
    • C) 1080
    • D) 1200

    Answer: 1020

    Explanation: Numbers divisible by both 15 and 20 must be divisible by their LCM, which is 60. The first four-digit multiple of 60 is 1020.