question_answer

Directions: What will come in place of question mark (?) in the following number series?

[Bank of Baroda (Clerk) 2011]

1, 7, 49, 343,?

A) 16807              

B) 1227  

C) 2058                            

D) 2401

E) None of these

Correct Answer: D

Solution :

Here, in the given series, increase is sudden. So, it must have multiplication series.

Now,

Alternate Method

Here, in the given series, the given pattern could also be explained as

1 7 49 343 2401 \[{{7}^{0}}\] \[{{7}^{1}}\] \[{{7}^{2}}\] \[{{7}^{3}}\] \[{{7}^{4}}\]