Work out an nth term formula for the triangular numbers 1,3,6,10,15,21,... Thanks in advance.
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Hello, Originally Posted by suhaster Work out an nth term formula for the triangular numbers 1,3,6,10,15,21,... Thanks in advance. Please note the pattern : So, what is ?
Sorry to both of u but im not understanding what ur trying to say, can u tell me the answer and with it the explanation plz thats the best way of learning it for me. tar
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