Sawaal
7
Q:

How many numbers with distinct digits are possible product of whose digits is 18?

A) 12 B) 8
C) 6 D) 4

Answer:   B) 8



Explanation:

Two digit numbers: The two digits can be 2 and 9: Two possibilities 29 and 92.

Three-digit numbers: The three digits can be 1, 2 and 9 => 3! Or 6 possibilities.

We cannot have three digits as (3, 3, 2) as the digits have to be distinct.

We cannot have numbers with 4 digits or more without repeating the digits.

So, there are totally 8 numbers.

Subject: Numbers
Exam Prep: CAT
Job Role: Bank Clerk
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