Math Problem Statement

Nomor pegawai pada suatu pabrik terdiri atas tiga angka dengan angka pertama bukan nol. Banyak nomor pegawai yang merupakan kelipatan lima adalah... 150 200 240 100 180

Solution

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Math Problem Analysis

Mathematical Concepts

Combinatorics
Number Theory
Multiples of Numbers

Formulas

Total combinations = 9 × 10
Total combinations for multiples of 5 = combinations ending in 0 + combinations ending in 5

Theorems

Multiples of 5 end in 0 or 5

Suitable Grade Level

Grades 6-8