A train 600 metres long is running at a speed of 54 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is:
Let the length of the tunnel be ‘x’ meter. Speed = 54 × (5/18) m/sec = 15 m/sec Time = 1 minute = 60 seconds. Let the length of the tunnel be x metres. Then, (600 + x)/60 = 15 =>(600 + x) = 900 => x = 300 m
x, y and z are real numbers. If x3 + y3 + z3 = 13,x + y + z = 1 and xyz = 1, then what is the value of xy + yz + zx?...
If a3 = 117 + b3 and a = 3 + b, then the value of a + b is:
An urn contains 3 green, 5 blue, 6 black and 4 yellow marbles.
Quantity I – If two marbles are picked at random, what is the probability th...
If (a2 − b2)sin θ + 2ab cos θ = a2 + b2, then tan θ =
The value of x which satisfies the equation (x+a2+2c2) / (b+c) + (x+b2 +2a2) / (c+a) + (x+c+2b2) ...
If 2cos2 Ɵ – 5cos Ɵ + 2 = 0,00 < Ɵ < 900 , then the value of (cosec Ɵ + cot Ɵ) is :
If (a + b)/c = 6/5 and (b + c)/a = 9/2, then what is the value of (a + c)/b?
If -5 ≤ x ≤ 3 and -1 ≤ y ≤ 0, then the minimum value of 2y – 3x is:
Which one of the following is the equation for Velocity Time relation?
If a + b2 + c2 = 16, x2 + y2 + z2 = 25 and ax + by + cz = 20, then the value of (a+b+c)/(x+y+z)
