Speed of the train = 90 × (5/18) = 25 m/sec Length of the train = 25 × 20 = 500 metres Let the length of the platform be ‘x’ metres Therefore, 500 + x = 25 × 22 Or, x = 550 – 50 = 50 metres
If x4 + 2x3 + ax2 + bx + 9 is a perfect square, where a and b are positive real numbers, then the value of a and b are
If (x - 1/x)2 = 3, then the value of x6 + 1/x6 equals
IfX = (√5 + 1) / (√5 – 1) and y = (√5 – 1) / (√5 + 1) then the value of(x 2+xy+y
If a + b + c = 0 then the value of (1/(a+b)(b+c)) + (1/(b+c)(c+a)) + (1/(c+a)(a+b)) is
Quantity I – 3
Quantity II – 254
If > 0 and < 0
If α and β are the roots of equation x2 – x + 1 = 0, then which equation will have roots α3 and β3?
...Which is the largest six digit number, which when divided by 12, 15, 20, 24 and 30, leaves the remainders 8, 11, 16, 20 and 26 respectively.
is equal to:
The value of = 3/4 ÷ 3/4 of 4/3 + 5/2 ÷ 2/5 of 5/4 – (2/3 + 2/3 of 5/6) is :
The value of the expression (1 + sec22° + cot68°)(1 – cosec22° + tan68°) is
