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

8000, 1000, 250, 125, 62.5, 250

The income of Yashi and Sheetal is Rs. 36,000 and Rs. 25,000 respectively. The ratio of the expenditure of Yashi and Sheetal is 7:4 respectively. If the savings of Sheetal is 12.5% more than that of Yashi, then find the expenditure of Yashi.

The ratio of the length and the breadth of a rectangle is 7:4 respectively. If the perimeter of the rectangle is 88 metres, then find the area of the circle whose radius is 14 metres less than length of the rectangle.

Sonali invested Rs. 'X' on compound interest at 20% p.a. compounded annually and after 2 years, she received a total amount of Rs. 36,000. If she invested same sum on simple interest at same rate of interest for 5 years, then find the SI earned on it.

Rita covered 120 km in 150 minutes. If she decreased her speed by 25%, then find the total distance covered by her in 225 minutes.

12 men or 15 women can do a work in 30 days. If the efficiency of a child is 60% less than that a man, then find the time taken by 4 men, 5 women and 5 children together to complete the work

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

3, 6, 2, 8, 2.4, 9.6

Quantity of milk is 55% more than that of water in 204 litres mixture (milk + water) . If 24 litres milk is added, then find the quantity of milk in the resultant mixture now.

'A' can complete a work in 35 days. He started the work and left after 21 days from starting. Remaining work was done by 'B' in 42 days. Find the time taken by 'B' to complete 60% of work.

Pradeep distributes 60% of his income among his wife, son and daughter in the ratio of 3:2:1, respectively. If the amount received by the son is Rs. 1,540, then find the income of Pradeep.

'A' is behind 'B' by 90 km. If speed of 'A' and 'B' are 45 km/h and 30 km/h, respectively. Find the distance covered by 'A' when he overtakes 'B'.

Length of a train, whose speed is 90 km/h, is 450 metres. Find the time taken (in seconds) by train to cross a bridge of length 550 metres.

180 litres mixture (alcohol + water) contains alcohol and water in the ratio 2:3 respectively. Find the quantity of alcohol that must be added so that ratio of quantity of alcohol and water becomes 5:6 respectively.

Amit and Ajit started a business together with an investment of Rs. 5,400 and Rs. 9,000. Ajit left the business after certain months. At the end of a year, ratio of profit share of Amit and Ajit was 9:10. Find the time after which Ajit left the business.