is this a decent workout?

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so I found a workout in Pinterest ive been,doing and I wanted some opinions on the effectiveness of it.

its:

10 squats

5 burpees

10 sit ups

5 burpees

10 lunges

and you do this as many times as possible in 15 minutes. I've been doing it once a day and plan to increase it to 2-3 times a day