Leo has two boxes of sweets.
In the first box there are 2 strawberry sweets and 3 lemon sweets.
In the second box there are 5 strawberry sweets and 7 lemon sweets.
Leo takes at random a sweet from the first box.
He then takes at random a sweet from the second box.
Complete the probability tree diagram.

Work out the probability that Leo takes two strawberry sweets.
Practise OCR GCSE Maths Probability Trees with exam-style questions for Foundation and Higher tier. 40 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.