There are 13 sheep in a field as shown here:
1. How many sheep can say that there is at least one other sheep here of the same colour?
2. The farmer takes one sheep from the field at random. What is the probability it is
a) Yellow b) Blue c) Green d) Not red ?
[Give your answers as decimals to two decimal places]
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The wool on each of these sheep is of two different colours.
What is the probability of two sheep being picked at random sharing a wool colour?