Question
The distance covered by a train in (4y-1) hours are
(64y3-1) km. The speed of the train is.ÂSolution
a³-b³ = (a - b) (a² + ab + b²) The speed of the train =(64y3-1) /(4y-1) =(4y)3-1/ (4y-1) =(4y-1) (16y2+4y+1)/ (4y-1) = (16y² + 4y + 1) km/h The speed of the train is (16y² + 4y + 1) km/h.
What will come in place of the question mark (?) in the following series?
22, 28, 37, ?, 72, 102
The question below is based on the given series I. The series I satisfy a certain pattern, follow the same pattern in series II and answer the questions...
9 25 ? 121 221 337
...7    12    34    117    ?   2465   14820
...- What will come in place of (?), in the given number series.
100, 95, 85, 70, ?, 25 What will come in place of the question mark (?) in the following series?
45, 68, 114, 183, 275, ?
What value should come in the place of (?) in the following number series?
56, 28, 28, 42, 84, ?
216, 81, 297, 378, ?, 1035, 1728
1221,     1100,     1000,     919,       ?
...18, 37, 60, ?, 120, 157
