Study the following number sequence and answer the given question. 5 1 4 7 3 9…
2026
Study the following number sequence and answer the given question.
5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6
How many even numbers are there in the sequence which are immediately preceded by an odd number but immediately followed by an even number?
- A.
1
- B.
2
- C.
3
- D.
4
Attempted by 1658 students.
Show answer & explanation
Correct answer: C
Answer: 3
Reason: Look for consecutive triplets where the pattern is odd, even, even (so the middle number is even, preceded by an odd and followed by an even). The matching triplets in the sequence are:
7, 2, 6 — the middle number 2 is even, preceded by odd (7) and followed by even (6).
5, 8, 6 — the middle number 8 is even, preceded by odd (5) and followed by even (6).
5, 2, 2 — the middle number 2 is even, preceded by odd (5) and followed by even (2).
Therefore, the count of even numbers that are immediately preceded by an odd number and immediately followed by an even number is 3.