Civil Service Clerical Ability Practice exam

To determine how many pairs of the sets of numbers are exactly alike, we need to closely examine each pair.

1. The first pair, 836459 and 834659, are not exactly alike because there is a difference in the digits (the third digit is different).

2. The second pair, 916533 and 916353, are also not exactly alike, as the third and fourth digits are switched, making them differ.

3. The third pair, 264821 and 268421, are not exactly alike as well. The arrangement of the third, fourth, and fifth digits differs.

4. The fourth pair, 163943 and 169343, are different because the second digit differs.

5. The fifth pair, 012039 and 021039, while similar, actually represent the same number containing leading zeros, meaning they are exactly alike in numeric value.

6. Finally, the sixth pair, 936129 and 936129, are exactly alike in every digit.

In conclusion, two pairs from the provided list - 012039 and 021039, and 936129 and 936129 - are exactly alike. Thus, the correct answer reflects that there are two pairs that meet the criteria of