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Let the speed of the boat in still water =B = 9km/h Speed of stream =S=x speed of the boat in downstream =B+S=9+x speed of the boat upstream =B-S=9-x B+S B-S Time 1 2 ATQ- (9+x) ×1 =(9-x) ×2 9+x =18-2x 3x =9 X =3km/h
196, 167, 144, ?, 108, 95
38, 41, 50, ?, 158, 401
5, 5, 15, 75, ?, 4725
What will come in place of the question mark (?) in the following series?
2.5, 6.5, 18.5, 54.5, 162.5, 486.5, ?
14, 34, 19, 29, 24, ? , 29, 19
48, 24.5, ?, 39.75, 81.5, 206.25, 621.75
25, 30, 50, 60, 80, ?
What will come in place of the question mark (?) in the following series?
4, 11, 32, 95, 284, 851, ?
4, 4, 8, 32, 256, ?
600 60 12 ? 1.44 0.72
