ABC26GN0032 · Number System

Subject: General Aptitude · Chapter: Number System · Exam: · Marks: · Difficulty:

When a certain number is multiplied by 18, the product consists entirely of 2's. What is the minimum number of 2's in the product?

Answer

Answer (as printed):

Explanation

We keep on dividing 22222......... by 18 till we get 0 as remainder. 12345679 Clearly, number of 2's in the product = 9. 18 222222222 18

Explanation as extracted from the printed page; notation may be imperfect.