The least possible value of |89 - 9a|, where a is an integer, is
Correct answer: B
Explanation
|89 - 9a| will have least value when a has highest possible value.
for a= 10 expression |89 - 9a| becomes |89 -90| = 1 which is the least possible value.
B
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Source: Algebra word problems from the AQuA-RAT dataset (Ling et al., 2017), published by Google DeepMind under the Apache License 2.0.
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AQuA-RAT items are crowdsourced algebra problems, not ACT questions. They carry five answer choices in the pre-2025 ACT Mathematics style and no ACT reporting category. Useful for drilling Preparing for Higher Math content; not a substitute for a real form.