IIT JEE Practice Question and Answer
8Q: In economics, if a good is inelastic, 1737 05b5cc655e4d2b4197774bd69
5b5cc655e4d2b4197774bd69- 1its supply or demand is not sensitive to price changes.true
- 2consumers have lost an interest in purchasing it.false
- 3producers have lost an interest in manufacturing it.false
- 4its supply or demand is too sensitive to price changes.false
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Answer : 1. "its supply or demand is not sensitive to price changes."
Explanation :
Answer: A) its supply or demand is not sensitive to price changes. Explanation: A good that is inelastic does not have very stretchy demand. In economic terms, the quantity demanded does not change a lot when the price changes. What do I mean by "does not change a lot"? If the percent change in quantity demanded is less than the percent change in price, economists label the demand for the good as inelastic. So, if the price of a good increases by 10 percent and the quantity demanded decreases by only 5 percent, that good is said to have inelastic demand. The quantity demanded does not stretch much relative to the change in price. Hence, in this case, consumers are not considered very sensitive, or responsive, to a change in the price of that good.
Q: Manideep purchases 30kg of barley at the rate of 11.50/kg and 20kg at the rate of 14.25/kg. He mixed the two and sold the mixture in the shop. At what price per kg should he sell the mixture to make 30% profit to him ? 1736 05b5cc6c5e4d2b4197774ddc3
5b5cc6c5e4d2b4197774ddc3- 115.84false
- 214.92false
- 313.98false
- 416.38true
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Answer : 4. "16.38"
Explanation :
Answer: D) 16.38 Explanation: Given, Manideep purchases 30kg of barley at the rate of 11.50/kg nad 20kg at the rate of 14.25/kg. Total cost of the mixture of barley = (30 x 11.50) + (20 x 14.25) => Total cost of the mixture = Rs. 630 Total kgs of the mixture = 30 + 20 = 50kg Cost of mixture/kg = 630/50 = 12.6/kg To make 30% of profit => Selling price for manideep = 12.6 + 30% x 12.6 => Selling price for manideep = 12.6 + 3.78 = 16.38/kg.
Q: A fair coin is tossed 11 times. What is the probability that only the first two tosses will yield heads ? 1736 05b5cc6c8e4d2b4197774df23
5b5cc6c8e4d2b4197774df23- 1(1/2)^11true
- 2(9)(1/2)false
- 3(11C2)(1/2)^9false
- 4(1/2)false
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Answer : 1. "(1/2)^11"
Explanation :
Answer: A) (1/2)^11 Explanation: Probability of occurrence of an event, P(E) = Number of favorable outcomes/Numeber of possible outcomes = n(E)/n(S) ⇒ Probability of getting head in one coin = ½, ⇒ Probability of not getting head in one coin = 1- ½ = ½, Hence, All the 11 tosses are independent of each other. ∴ Required probability of getting only 2 times heads =122×129=1211
Q: Lucky started working 2 years ago. Her starting salary was half of Karthik's salary at that time. Each year since then Lucky and Karthik have received a rise of 10% in their respective salary. What percentage (to the nearest percent) of Karthik's current salary is Lucky's current salary ? 1736 05b5cc6cfe4d2b4197774e2f9
5b5cc6cfe4d2b4197774e2f9- 175%false
- 222.5%false
- 335%false
- 450%true
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Answer : 4. "50%"
Explanation :
Answer: D) 50% Explanation: Let the salary of Karthik 2 years ago be Rs.100So, Lucky's salary 2 years ago was Rs.50 Karthik's present salary has seen two 10 percent increases. So as Lucky's salary. So, Karthik's salary 1 year ago = 100 + 10% of 100 = 100 + 10 = 110.Karthik's present salary = 110 + 10% of 110 = 110 + 11 = 121. Lucky's salary 1 year ago = 50 + 10% of 50 = 50 + 5 = 55Lucky's present salary = 55 + 10% of 55 = 55 + 5.5 = 60.5 Lucky's present salary of 60.5 = 50% of Karthik's present salary of 121.
Q: Antonym of the given word abet 1736 05b5cc6d9e4d2b4197774e83e
5b5cc6d9e4d2b4197774e83e- 1Riskfalse
- 2Pacifyfalse
- 3Aidfalse
- 4Preventtrue
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Answer : 4. "Prevent"
Explanation :
Answer: D) Prevent Explanation:
Q: What gets bigger the more you take away? 1736 05b5cc696e4d2b4197774c5a4
5b5cc696e4d2b4197774c5a4- Show AnswerHide Answer
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Answer :
Explanation :
A Hole gets bigger and bigger as you take more away from it.
Q: What role does Dalvik play in Android development ? 1735 05b5cc73de4d2b4197774f95c
5b5cc73de4d2b4197774f95c- Show AnswerHide Answer
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Answer :
Explanation :
Dalvik serves as a virtual machine, and it is where every Android application runs. Through Dalvik, a device is able to execute multiple virtual machines efficiently through better memory management.
Q: Penny has 5 children, 1st is January, 2nd kid February, 3rd is called march , 4th is April. What is the name of the 5th. 1734 05b5cc6a4e4d2b4197774cc7b
5b5cc6a4e4d2b4197774cc7b- Show AnswerHide Answer
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Answer :
Explanation :
Here If you notice the difference, There is no question mark (?) at the end of the puzzle. In that case, "What" is the name of the 5th child.

