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Secondary 1 | Maths

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Need help. Thabk you.

(Sorry, I have no idea how to put two dots on top)

For two dots, we use 10 x 10 = 100 as a multiplier, as follows.

Let u = 0.36•• = 0.36363636...

Then 100u = 36.363636... (shifting the decimal place 2 units to the right) = 36.36••

So 100u - u = 36.36•• - 0.36•• = 36

99u = 36

u = 36/99 = 4/11

So 5.36•• = 5 + 4/11 = 59/11.

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