What will come in the place of question mark (?) in the given question?

405, 135, 54, 27, ?, 18

What will come in the place of question mark (?) in the given question?

72, 89, 123, 174, ?, 327

What should come in place of the question mark '?' in the following number series ?

?, 43, 26, 41, 28, 39

What will come in place of question mark(?) in the given number series?

333, 309, 289, 273, ?, 253

What will come in place of question mark(?) in the given number series?

7, 8, 18, 57, 232, ?

The speed of boat in still water is thrice the speed of boat in upstream. If the upstream speed of boat is 108 km/h, find time taken by boat to cover 2550 meter in downstream direction.

Ratio of Arun’s age 2 year later and Varun’s age 4 years ago is 1 : 1 and average of their ages 9 years later will be 44 years then find ratio of present age of Arun to Varun.

Nitin rides a bicycle at the speed of 15 km/hr, but stops for 15 minutes to take rest after every 20 kms. How much time will he take to cover a distance of 150 kms?

The average age of 11 players of a football team is 30 years. The average age of 5 players of that is 27 years and that of another 5 players is 29 years. If the one player is not included in any group then the age (In years) of that player is

In a 120 litre mixture of milk and water the percentage of milk is 70%. If 20 litre of mixture is taken out and 30 litre water is added to the mixture, what will be the ratio of milk and water in the final mixture?