Complete the following series:

8, 6, 9, 23, 87, _____

A train 110 m long traveling at 60 km/h takes how long to cross a 170 m long bridge?

On 10th Feb 2005 it was Thursday. What was the day of the week on 10th Feb 2004? 

The LCM of two numbers is 48. The numbers are in the ratio of 3:2. Find the numbers.

Find the number that does not fit the pattern in the following sequence:

125, 127, 130, 135, 142, 153, 165

Solve the following system of equations to find the values of a and b:

I. 9a² + 18a + 5 = 0
II. 2b² + 13b + 20 = 0

You are running an investigation agency. You find some words that have numbers, which may be a clue. The words EAN=21 and PAN=32, then what is the number for HAN?

A 200 m long train moving at a speed of 12 km/h passes a man standing on a pavement near a railway track. Find the time taken by the train to pass the man.

A fast train takes 3 hours less than the slow train for a journey of 600 km. If the speed of the slow train is 10 km/hr less than the fast train, the speed of the slow train is

Raj asked Shiv's age, to which Shiv replied, "Take my age three years from now, multiply it by 3, and then subtract three times my age three years ago. That will give you my current age." What is Shiv's current age?