A number is missing in the above picture of circles. Can you find the number using numerical skill. Check the answer below.
The missing number is 3
Upper number in circle = upper side number / lower side number
Lower number in circle = right side number * Left side number
First Circle: 3=6/2, 10=5*2
Second Circle: 8/4=2, 8*3=24
Third Circle: 6/2=3, 7*3=21