Answer: A. they have expertise in a focused technical topic
Explanation:
Answer:
( ¹⁵C₂ )² × 5! = 1082161080
Explanation:
Data provided in the question:
Number of married couples = 15
Therefore,
Number of males = 15
Number of females = 15
Now,
The number of possible dancing arrangements
= Probability of selecting males × Probability of selecting males × ways of arranging 5 pairs
= ¹⁵C₂ × ¹⁵C₂ × 5!
= ( ¹⁵C₂ )² × 5!
= ![[\frac{15!}{5!\times(15-5)!}]^2](https://tex.z-dn.net/?f=%5B%5Cfrac%7B15%21%7D%7B5%21%5Ctimes%2815-5%29%21%7D%5D%5E2)
× ( 5 × 4 × 3 × 2 × 1 )
= ![[\frac{15\times14\times13\times12\times11\times10!}{5\times4\times3\times2\times1\times10!}]^2](https://tex.z-dn.net/?f=%5B%5Cfrac%7B15%5Ctimes14%5Ctimes13%5Ctimes12%5Ctimes11%5Ctimes10%21%7D%7B5%5Ctimes4%5Ctimes3%5Ctimes2%5Ctimes1%5Ctimes10%21%7D%5D%5E2)
× ( 5 × 4 × 3 × 2 × 1 )
= ![[\frac{360360}{120}]^2](https://tex.z-dn.net/?f=%5B%5Cfrac%7B360360%7D%7B120%7D%5D%5E2)
× 120
= 1082161080
Answer:
Normal good
Explanation:
Income effect Is change in quantity demanded when the consumers purchasing power change as a result of a change in real income.
Substitution effect is when quantity demanded falls as a result of rise in price of a good which leads consumers to purchase cheaper alternatives.
A normal good is a good whose demand increases as income increases.
If the price of a normal good falls, the real purchasing power of the consumer increases and the consumer buys more of the good. Also, the consumer substituites from more expensive alternative goods to the more cheap normal good. The income and substitution effect both move in the same direction.
