A clock shows 1:56. Calculate the acute or smaller reflex-complement angle made by its hands.
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A83°
B81°
C84°
D82°
Correct Answer: 82°Your Answer: D
Explanation
The correct answer is 82°.
Important Notes
Read the complete condition before calculating and write the required reference point, date, or clock time separately. This prevents a correct calculation from answering the reverse question.
Keep units consistent. Reduce day differences modulo 7; treat 12 on a clock as zero for angle work; and convert gained or lost minutes into the same time unit as the stated interval.
Check boundary cases explicitly: February, century years, noon, midnight, and an angle greater than 180 degrees often change the apparent answer. A century is a leap year only when divisible by 400.