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

13, 91, 108, 756, ?, 5411

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

159, 303, 499, 755, 1079, ?

In a 240 ml mixture of milk and water, the quantity of the water is 56.25% of the mixture. After removing 'Y' ml of mixture, 8 ml of water is added to the mixture, so the ratio of milk and water becomes 5:7. Find the value of 'Y'.

A deer is running at a speed of 20 m/sec in the same direction of the train. Train can cross the deer in 9 seconds. If speed of the train is 144 km/hr, then find the time taken by train to cross a bridge of 120 metres.

The following numbers form a series. Find the odd one out.

124, 140, 108, 156, 80, 172

The following numbers form a series. Find the odd one out.

2, 6, 21, 88, 430, 2676

The average marks scored by 28 boys and 35 girls is 80 and 90 respectively. Find the average marks scored by whole students together. (Answer should be round off to nearest integer)

The following numbers form a series. Find the odd one out.

384, 240, 440, 180, 504, 104

Ratio of three natural numbers is 2:4:5. If sum of squares of each number is 720, then find the difference between smallest and largest number.

'M' and 'N' started a business such that investment of 'M' was Rs. 300 more than that of 'N'. 'M' left the business after 6 months. At the end of a year, ratio of profit shares of 'M' to 'N' is 5:8, then find the investment of 'M'.

Out of total distance, Ravi covers one-third of the distance at 40 km/h and remaining distance at 60 km/h. If the total time taken by him to cover total distance is 7 hours, then find the distance covered by him at 60 km/h.

Upstream speed of boat is 40% less than its downstream speed. If speed of stream is 12.5 km/h, then find the upstream distance covered by the boat in 3 hours.

A sum invested on simple interest at 'R%' p.a. becomes quadruples of itself in 24 years. Find the value of (4R - 15).

The following numbers form a series. Find the odd one out.

34, 36, 42, 54, 74, 102

The following numbers form a series. Find the odd one out.

126, 270, 342, 380, 396, 405

A train of length 100 metres can cross a man in 4 seconds. How long will it take the train to cross a platform of length 50 metres?

A shopkeeper marked an article 75% above the cost price and sold it after two consecutive discounts of 10% and 20%. Find the cost price of the article, if in this transaction he had a profit of Rs. 1,950.

A and B together started a business with Rs. 7200 and Rs. 4800 respectively. After one year, B increased his investment by 25%. Find the share of A, out of the total profit of Rs. 4095 after 2 years.