Question

Plz tell the answer fast
identify the pattern

1) 0 , 6 , 24 , 60 120 ,?

2) 6 , 20 , 36 , 48 , 50 , ? , 0

3) 7 , 4 , 5 , 9 , 20 , ?

4) 289 , 378 , 456 , 512 , 514 , ?

Answer 1

210

0+1*6=6

6+3*6=24

24+6*6=60

60+10*6=120

120+15*6=210

210+21*6=336

The differences between successive terms are 1*6,3*6,6*6,10*6,15*6,21*6respectively.

They are of the form x*6 where x=1,3,6,10,15,21 respectively

ie x is of the pattern 1,1+2,1+2+3,1+2+3+4,1+2+3+4+5,1+2+3+4+5+6 respectively.