A train 240 meters in length crosses a telegraph post in 16 seconds. The speed of the train is?
1). 50 Km/hr
2). 52 Km/hr
3). 54 Km/hr
4). 56 Km/hr
If SinƟ = √3/2 and 0°<Ɵ<90°, then the value of tan(Ɵ-15°) is
1). 1
2). √3
3). 1/√3
4). √2
.If $a^{3}$+1 = a, then the value of $a^{3}$ is
1). 0
2). 1
3). -1
4). 2
Gautam travels 160 kms at 32 kmph and returns at 40 kmph. Then average speed is
1). 72 kmph
2). 71.11 kmph
3). 36 kmph
4). 35.55 kmph
If $\frac{\sqrt{2+x}}{\sqrt{2+x}}\pm\frac{\sqrt{2-x}}{\sqrt{2-x}}$=2 the value of x is
1). $4\diagup5$
2). $3\diagup5$
3). $8\diagup5$
4). $1\diagup5$