Which expression has a value equal to the rightmost digit of the integer q = 16222?

Rationale

q % 10

The expression q % 10 extracts the rightmost digit of the integer q, which in this case is 16222. By performing the modulus operation with 10, we isolate the last digit, yielding the correct result of 2.

A (q % 10000) YOUR ANSWER

This expression calculates the remainder when q is divided by 10000. For q = 16222, the result would be 622, which does not correspond to the rightmost digit of 2. Thus, it fails to isolate the last digit.

B (q % 10) CORRECT

This expression correctly finds the last digit of the integer q. By dividing 16222 by 10 and taking the remainder, we obtain 2, which is indeed the rightmost digit of the number. This makes it the correct choice.

C (10 % q) YOUR ANSWER

This expression evaluates the remainder when 10 is divided by q. Since 16222 is much larger than 10, the result would be 10. However, this does not relate to the last digit of q, making it an incorrect option.

D (q / 10000) YOUR ANSWER

This expression performs integer division of q by 10000, which results in 1 (as only the integer part is considered). While it does not yield a remainder, it also does not provide the last digit and therefore is incorrect.

Conclusion

To find the rightmost digit of the integer q = 16222, the expression q % 10 is the only choice that accurately isolates this digit, resulting in 2. The other options either provide incorrect values or do not relate to the last digit, highlighting the importance of understanding modulus operations in extracting specific digits from integers.

Which expression has a value equal to the rightmost digit of the integer q = 16222?

q % 10

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