Question

For some number a, b and c, c^a/c^b is equal to _________

(a) c^a-b

(b) c^a+b

(c) c

(d) None of the mentioned

I had been asked this question during a job interview.

My question is from Number Theory and Cryptography in division Number Theory and Cryptography of Discrete Mathematics

Answer 1

The correct answer is (a) c^a-b

To elaborate: If base are same then exponenents powers are added, 1/c^b = c^-b.