1) y=kx^2 this is a/an: a) hyperbole b) parable c) generic lines d) explicit generic lines 2) what is the cone volume formula? a) Abxh b) l^3 c) Abxh/3 d) Pxa/2 e) Cxa/2 3) when are two straight lines parallel? a) their coefficient are one the opposite and the inverse of the other  b) they both have the same angular coefficient  c) their coefficient are one the inverse of the other  d) y=x or y=-x 4) which is the correct one? a) -5<-6 b) 7<-7 c) -1>-2 d) 0<-1 5) In a deck of 40 cards 6 are green, 9 orange, 8 black and 7 white. What is the probability of getting the green and black ones? a) 13/40 b) 7/20 c) 15/40 d) 2/5 e) 17/40 6) 3... 11... 35... 107... ?... ?... 2915... what are the missing numbers? a) 428 and 1712 b) 319 and 955 c) 323 and 971 7) if 1=5 2=1200 3= 1350 4= 1400 6= 2700 5=?? a) 2550 b) 2695 c) 1 d) 1405 8) which are the numbers that  added or multiplied together have the same results ? a) 5 6 2 b) 1 2 3 c) 2 4 6

riddles , probabilities , solid and...

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