Answer: C) higher frequency Explanation: As the frequency of sound is higher, women have shriller voices than men. The shrillness or pitch of a sound is determined by its frequency. The higher the pitch shriller the voice. As the sounds produced by vocal cords of women are higher than men so women have shriller voices than men. Because their vocal cord is of smaller size. As their vocal cord is more stretched than men's.

Answer: B) 50/9 % Explanation: Let sum = S. Then, amount = 7S/6 S.I. = 7S/6 - S = S/6; Time = 3 years. Rate = (100 x S) / (S x 6 x 3) = 5 5/9 = 50/9 %.

Answer: B) Match one person's savings with another person's investment Explanation: The primary Economic function of the Financial system is to match one person's savings with another person's investment. As a key component of the financial system, banks allocate funds from savers to borrowers in an efficient manner. They provide specialized financial services, which reduce the cost of obtaining information about both savings and borrowing opportunities. These financial services help to make the overall economy more efficient.

Answer: B) demand curves do not reflect consumer’s full willingness to pay for goods or services Explanation: Market failure arises because it is not possible for the market to correctly weight cost and benefits in a situation in which some of the cost is completely unaccounted. Demand-side market failures happen when demand curves do not reflect consumer’s full willingness to pay for goods or services. Supply-side market failures occur when supply curves do not reflect the full cost of producing a good or services.

Answer: A) Football Explanation: Top five most popular games world wide are :   Game name              -      Estimated  fans     -    Popular Regions   1. Soccer / Football      -      3.5 Billion    -     Europe, Africa, Asia, America 2. Cricket                    -      2.5 Billion     -    Asia, Australia, UK 3. Basketball               -      2.2 Billion     -    US, Canada, China and Philippines 4. Field Hockey           -       2 Billion       -     Europe, Africa, Asia, Australia 5. Tennis                    -       1 Billion       -     Europe, Americas, and Asia.

Answer: A) if all the resources of an economy are in use, more of one good can be produced only if less of another good is produced. Explanation: A graph that describes the maximum amount of one good that can be produced for every possible level of production of the other good is nothing but a production possibilities curve.

Answer: A) Hangar Explanation: We park car temporarily in garrage, similarly, aeroplane is temporarily parked in hangar.

Answer: B) 18 Explanation: Clearly total persons are increased in  28/35 :: 52/65 = 4:5. As time is inversely proportional to men, so total time will decrease in the ratio 5:4. Hence, 22.5 x 4/5 = 18 days.