What is the next number in this sequence? 10, 13, 20, 31, 46, ...

Analyse the sequence to find the second order difference.10 13 20 31 46 75 3 7 11 15 19 4 4 4 4

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Express 0.545454... as a fraction in its simplest form.


3/5 of a number is 162. Calculate the number.


Given 6x+2y=4 and 5x+y=8, solve the simultaneous equations to find x and y.


Find the equation of the line that passes through the (4,6) and (9,-4)