NIMCET 2017 Question Paper with solutions

Decimal 99 is represented in different number system in the series.
99
Base = 10
= 9x10 + 9
= (99)10
90
Base = 11
=9x11+0
= (99)10
83
base = 12
=8x12 + 3
= (99)10
78
Base = 13
=7x13 + 8
= (99)10
71
Base = 14
=7x14 + 1
= (99)10
69
Base = 15
=6x15 + 9
= (99)10
Hence, (71, 69) is the correct answer.