There are 7 strawberry sweets and n n\,n lemon sweets in a bag.
Maya takes a sweet from the bag at random.
She puts the sweet back into the bag.
Maya then takes another sweet at random from the bag.
The probability that the first sweet Maya takes is strawberry and the second sweet Maya takes is strawberry is 49144\displaystyle \frac{49}{144}14449
Work out how many lemon sweets are in the bag.
