Search over 10,000 free study notes

This question can be solved using a tree diagram. First we need to map out the two possible outcomes from the question:

H=heads T= tails. The first scenario is HHH, as the probability of H each tim...

Knowing when to use the preterite or imperfect tense when expressing a past action is one of the trickiest aspects of spanish grammar and can cause confusion for any level of spanish speaker. I always lik...

Tips: When a keyword is mentioned in the question, it is advised to start your answer by defining that keyword or concept (you would usually get a few marks for this) . In this case, star...

An impulse travels along the pre-synaptic neurone, and when it reaches the axon ending it stimulates calcium channles to open on the pre-synaptic membrane. This allows calcium ions to rush into the neuron...

The two main past tenses in German are the simple past and the present perfect. The simple past uses just one word, for example 'ich ging', while the present perfect uses two words, for example 'ich bin g...