Read the row of digits below from left to right.
7 2 8 3 7 1 4 4 7 3 4 7 1 1 2 5 4 7 1 4 1 7 1 4 2
How many 1s in this row have 7 directly before them and 4 directly after them?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 3
Check every 1 in the row: the digit before it must be 7, and the digit after it must be 4.
Place 6: 7 1 4 — counts
Place 13: 7 1 1 — does not count (followed by 1)
Place 14: 1 1 2 — does not count (preceded by 1)
Place 19: 7 1 4 — counts
Place 21: 4 1 7 — does not count (preceded by 4)
Place 23: 7 1 4 — counts
So the answer is 3.