ABC26GN0216 · Number System

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

If 1 × 2 × 3 × ........ × n is denoted by n , then little finger 5, then reversed direction, calling the 8 – 7 – 6 is equal to ring finger 6, middle finger 7, index finger 8, thumb
(a)6 × 7 × 8
(b)7 × 8 × 7 9 and then back to the index figure for 10, middle finger for 11, and so on. She counted upto 1994. She
(c)6 × 8 × 6
(d)7 × 8 × 6 ended on her
Answer
Answer (as printed): C
Explanation
8 – 7 – 6 = 8 × 7 × 6 – 7 × 6 – 6 = (56 – 7 – 1) × 6 = 48 × 6 = 6 × 8 × 6 .  99   99   99   99 

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

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