Quote:
Originally Posted by Aarav ------------------------------------------------------------ Quantitative Question # 12 ------------------------------------------------------------ Question: How many two digit or three digit positive integers in base 6 are there such that if 0 in inserted between the units and the tens digit, the multiple of the original number is obtained? (a) 12 (b) 15 (c) 16 (d) 18 (e) none of the foregoing |
Answer: (e)
units digit has to be 0. so we'll have 7 '2' digit and 30 '3' digit positive integers respectively.
Added later: Yet again I've managed to overlook something. Blame it on complacency

. Thaks vineet for pointing it out.
Amrutesh