EduGoog

In Number sequece questions, you are given a long series of numbers. It is required to find out how many times a number satisfying conditions, specified in the questions, occurs.

Which is the third number to the left of the number which is exactly in the middle of the following sequence of numbers ?
1  2  3  4  5  6  7  8  9  2  4  6  8  9  7  5  3  1  9  8  7  6  5  4  3  2  1

Option:
A. 3
B. 4
C. 5
D. 6
E. 7
Answer: B . 4

Justification:

There are 27 numbers in the given sequence.
So, middle number = 14th number = 9.
Clearly, the third number to the left of this 9 is 4.

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