Please I need some answers

Plzzz maths ! quadratic sequences=an^2+c 1) 11,17,27,41,59 2) 7,16,31,52,79 3) 6,18,38,66,102 4) 0,9,24,45,72 5) 0,12,32,60,96

Select the graph of the solution. click until the correct graph appears. |x| = 3

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)