Find the HCF of (3125-1) and (335-1).
a) 35 – 1
b) 312 – 1
c) 34 – 1
d) None of these
Answer: a
Explanation: 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
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