It produces one output pulse for every 10 input pulses✓الإجابة الصحيحة
It decodes a decimal number for display on a seven-segment LED display
It produces 10 output pulses for every input pulse
It decodes a binary number for display on a seven-segment LED display
الشرح
A decade counter counts through ten states and then rolls over, so it emits one output pulse for every ten pulses at its input. Turning a count into segment drive is the job of a separate decoder/driver, not of the counter.