Question

153. If unit's digit of the product 171nx1413x 729x 2015
is 0 then the maximum number of values that ‘n’ may
take?​

Answer 1

Answer:

Option D

Explanation:

47n × 729 × 345 × 343 = 47n × 862,66,215

It is given that the units digit of 47n × 862,66,215 or n × 5 is 5.

Therefore, the values of n are all odd digits. Hence, option (d) is the answer.