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

1 9 25 49 81 ? 169

748 737 715 682 638 ?

121 117 108 92 67 ?

3 23 43 ? 83 103

50 26 14 ? 5 3.5

In 2003, the total population of a village was 4800, out of which 40% were females. In 2004, the total population increased by 10% as compared to the previous year. If the number of females remained the same in 2004, what was the percentage increase in the number of males in 2004 as compared to 2003?

Jim invested Rs. 1700 and Rs. 2300 in schemes A and B respectively for 3 years. If schemes A and B offer simple interest at the rate of 6 p.c.p.a. and at the rate of 9 p.c.p.a. respectively, what is the total interest earned by Jim from both the schemes together after 3 years?

When 3626 is divided by the square of a number and the answer so obtained is multiplied by 32, the final answer obtained is 2368. What is the number ?

A milkman sells 120 litres of milk for Rs. 3,360 and he sells 240 litres of milk for Rs. 6,120. How much concession does the trader give per litre of milk, when he sells 240 litres of milk ?

A and B both start a business. Amount invested by B is $frac{1}{3}$ rd of that invested by A. Three months from the start of the business, A withdrew $frac{1}{3} mathrm{rd}$ of his investment and B tripled his investment. If from the total annual profit earned, A receives Rs. 1800 as his share from the profit, what was the total annual profit earned?

The respective ratio between two positive numbers (x and y) is 3 : 5. When 2 is added to both the numbers the ratio between resulting numbers becomes 5 : 8. What is the difference between both the numbers?

A car runs at the speed of 50 kmph when not serviced and runs at 60 kmph. when serviced. After servicing the car covers a certain distance in 6 hours. How much time will the car take to cover the same distance when not serviced?

The sum of the digits of a two digit number is 14. The difference between the first digit and the second digit of the two digit number is 2. What is the product of the two digits of the two digit number?

What approximate amount of compound interest can be obtained on an amount of Rs. 9,650 at the rate of 6.p.c.p.a. at the end of 3 years ?

A boat can travel 14.4 km downstream in 32 minutes. If the speed of the current is 3 kmph, how much time the boat will take to travel 84 km upstream?

Study the following table carefully to answer the questions given below it .

Total Residents and Percentage of Women out of those Living in Various Societies Over the Years

What is the respective ratio of men living in Society C in the year 2002 to the year 2003 ?

What is the respective ratio of the number of women to the total residents in Society E over the years?

What is the difference between the total residents living in all the societies together in the year 2006 and the total residents living in all the societies together in the year 2007 ?

What is the average number of men living in all the societies together in the year 2005 ?

What is the average number of women living in all the societies together in the year 2005 ?

The average of five positive numbers is 213. The average of the first two numbers is 233.5 and the average of last two numbers is 271. What is the third number ?

The number of employees in Companies A, B and C are in a ratio of 4 : 5 : 6 respectively. If the number of employees in the Companies is increased by 25%, 30% and 50% respectively, what will be the new ratio of employees working in Companies A, B and C respectively ?

Sonali invests 15% of her monthly salary in insurance policies. She spends 55% of her monthly salary in shopping and on household expenses. She saves the remaining amount of Rs. 12,750. What is Sonali’s monthly income ?

In how many different ways can the letters of the word ’ARISE’ be arranged ?

The ratio of ducks and frogs in a pond is 37 : 39 respectively. The average number of ducks and frogs in the pond is 152. What is the number of frogs in the pond?

What approximate value should come in place of the question mark (?) in the following questions ? (You are not expected to calculate the exact value.)

54 × 746 ÷ 32 = ?

(4863 + 1174 + 2829) ÷ 756 = ?

$sqrt{964} imes sqrt{348}=?$

$left[(1.5)^{2} imes(3.2)^{2} ight] div 2.3=?$

37.35 + 13.064 × 3.46 = ?

What should come in place of the question mark (?) in the following questions?

$15 frac{1}{2}+7 frac{3}{4}=? div 16$

$sqrt{?+483} div 6=(125)^{frac{1}{3}}$

60% of 725 = 174 × ?

$?-(0.6)^{2}=(0.7)^{2} div 0.35$

$frac{3.2 imes 0.5}{4}=? div 6$