Question

In each of the questions given below, there is a mathematical series. After the series, a number is given followed by (a), (b), (c), (d) and (e). You have to create another series after understanding the sequence of the given series which starts with the given number. Then, answer the question given below.
1 9 65 393
2 (a) (b) (c) (d) (e)
Out of the following numbers, which would come in the place of (c)?

• A. 490
• B. 853
• C. 731
• D. 729
• E. None of these

Answer 1

The correct option is D 729

The series is $\times$ 8 + 1, $\times$ 7 + 2, $\times$ + 3,
$\therefore$ a = 2 $\times$ 8 + 1 = 17, b = 17 $\times$ 7 + 2 = 121
c= 121 $\times$ 6 + 3 = 729.