Read the row of digits below from left to right.
1 7 4 2 8 4 6 3 4 0 9 4 3 5 4 1 6 4 4 2 7 4 9 8 4 1 5
How many 4s in this row have a digit greater than 5 directly before them and a digit less than 4 directly after them?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 3
Check every 4 in the row: the digit before it must be greater than 5 (6, 7, 8 or 9), and the digit after it must be less than 4 (0, 1, 2 or 3).
Place 3: 7 4 2 — counts
Place 6: 8 4 6 — does not count (followed by 6, which is not less than 4)
Place 9: 3 4 0 — does not count (preceded by 3, which is not greater than 5)
Place 12: 9 4 3 — counts
Place 15: 5 4 1 — does not count (preceded by 5, which is not greater than 5)
Place 18: 6 4 4 — does not count (followed by 4, which is not less than 4)
Place 19: 4 4 2 — does not count (preceded by 4, which is not greater than 5)
Place 22: 7 4 9 — does not count (followed by 9, which is not less than 4)
Place 25: 8 4 1 — counts
So the answer is 3.