Read the row of digits below from left to right.
3 6 1 5 6 5 6 6 8 2 5 1 4 0 1 3 8 6 7 6 5 4 0
How many 6s in this row have an odd digit directly after them?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 4
Check every 6 in the row: the digit after it must be odd (1, 3, 5, 7 or 9).
Place 2: 3 6 1 — counts
Place 5: 5 6 5 — counts
Place 7: 5 6 6 — does not count (followed by 6, which is even)
Place 8: 6 6 8 — does not count (followed by 8, which is even)
Place 18: 8 6 7 — counts
Place 20: 7 6 5 — counts
So the answer is 4.