Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
See 1 Answer
Sorry, the answer is (4).
Thanks but can explain why
Can explain why? Thanks
Total 3 round buttons, when you remove 1 white button, you'll left 2 buttons: 1 black and 1 white. 1 white button is 1/2 = 50%.