How many 3’s are there in the given sequence which are neither preceded by 6…
2022
How many 3’s are there in the given sequence which are neither preceded by 6 nor immediately followed by 9? Series: 9 3 6 6 3 9 5 9 3 7 8 9 1 6 3 9 6 3 9
- A.
1
- B.
2
- C.
3
- D.
4
Attempted by 85 students.
Show answer & explanation
Correct answer: B
We check each 3 in the series and apply both conditions: Conditions: It should not be preceded by 6
It should not be immediately followed by 9
Check positions of 3: 9 3 6 → followed by 6 → ✅ valid
6 3 9 → preceded by 6 ❌
9 3 7 → not preceded by 6 and not followed by 9 → ✅ valid
6 3 9 → preceded by 6 ❌
6 3 9 → preceded by 6 ❌
👉 Valid 3’s = 2