How many even numbers are there in the following number sequence which are preceded and succeeded by an odd number?
1 2 3 3 2 1 4 2 3 1 4 2 2 3 3 1 4 1

Correct option is B

Given sequence:
1 2 3 3 2 1 4 2 3 1 4 2 2 3 3 1 4 1
Logic:
Count even numbers that are preceded and succeeded by odd numbers.
Explanation:
Check each even number in the sequence:
2 (between 1 and 3) → odd, even, odd → follows
2 (between 3 and 1) → odd, even, odd → follows
4 (between 1 and 2) → odd, even, even → does not follow
2 (between 4 and 3) → even, even, odd → does not follow
4 (between 1 and 2) → odd, even, even → does not follow
2 (between 4 and 2) → even, even, even → does not follow
4 (between 1 and 1) → odd, even, odd → follows
Total even numbers that follow the condition = 3
Thus, correct option is (B).