Read the row of digits below from left to right.
2 8 0 8 1 2 2 8 5 0 0 1 0 7 4 2 9 0 0 1 3 8 9 5
Take every two neighbouring digits of the row as a pair (1st and 2nd, 2nd and 3rd, and so on). In how many of these pairs are the two digits the same even digit (for example 4 and 4)?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 3
Each digit and the digit just after it form a pair. Going from left to right, the pairs made of the same even digit twice are:
2, 2 (6th and 7th digits)
0, 0 (10th and 11th digits)
0, 0 (18th and 19th digits)
No other neighbouring pair has the same even digit twice.
So the answer is 3.