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Aptitude · Q29

Number System

Competitive Exams · Aptitude · question 29

Q29

Find the HCF of (3125-1) and (335-1).

A.
34 - 1
B.
35 - 1
Answer
C.
312 - 1
D.
None of these

Answer: Option B

Solution

Answer: Option B
Solution:
The solution of this question is based on the rule,
The HCF of (am - 1) and (an - 1) is given by (aHCF of m, n - 1)
Thus for this question the answer is (35 - 1)
Since, 5 is the HCF of 35 and 125