Question

Find the odd number in the given series 14, 27, 105, 525, 4993

Answer 1

odd number in the given series will be 525

14 = (13×1)+ 1

27= (13×2)+1

105 = (13×8)+1

525 = (13×40)+5

4993 = (13×384)+1

All the numbers are giving remainder 1 when they are divided by 13 except 525

Answer 2

14 = 13× 1 +1

27 = 13× 2 + 1

105 = 13× 8 +1

4993 = 13 × 384 + 1

525 = 13× 40 + 5

SO 525