πAns. B | Explanation
There are two possible routes between Yamuna bank and Najafgarh - one via Kirtinagar and the other via Huda City Centre.
Yamuna bank to Najafgarh via Huda city centre = (5 + 11 + 10 + 5 + 8) Γ 1.5 + 5 + 5 = 58.5 + 10 = 68.5 minutes.
Here in this route there are two points at which metro line is changed, so 5 minutes is added 2 times.
Yamuna Bank to Najafgarh via Kirtinagar = (5 + 7 + 13) Γ 1.5 = 37.5 minutes.
As less time is taken via this route, she will adopt this route to Najafgarh.
Now, time taken to reach Dilshad Garden from Najafgarh = (13 + 7 + 10) Γ 1.5 + 5 = 50 minutes
Hence, Minimum possible time to complete this entire trip = 37.5 + 50 = 87.5 minutes
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There are two possible routes between Yamuna bank and Najafgarh - one via Kirtinagar and the other via Huda City Centre.
Yamuna bank to Najafgarh via Huda city centre = (5 + 11 + 10 + 5 + 8) Γ 1.5 + 5 + 5 = 58.5 + 10 = 68.5 minutes.
Here in this route there are two points at which metro line is changed, so 5 minutes is added 2 times.
Yamuna Bank to Najafgarh via Kirtinagar = (5 + 7 + 13) Γ 1.5 = 37.5 minutes.
As less time is taken via this route, she will adopt this route to Najafgarh.
Now, time taken to reach Dilshad Garden from Najafgarh = (13 + 7 + 10) Γ 1.5 + 5 = 50 minutes
Hence, Minimum possible time to complete this entire trip = 37.5 + 50 = 87.5 minutes
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π3
If 2 boys and 2 girls are to be arranged in a row so that the girls are not next to each other, how many possible arrangements are there? (UPSC-2017)
Anonymous Quiz
22%
(a) 3
35%
(b) 6
35%
(c) 12
9%
(d) 24
π10
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πUPSC Prelims 2023 Paper -1
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π5β€3π₯1
The difference between 42% of a number and 28% of the same number is 210. What is 59% of that number?
Anonymous Quiz
9%
(a) 630
54%
(b) 885
29%
(c) 420
7%
(d) 900
π4π₯1
An item is bought for Rs 42 and sold it for Rs. 52.50. Calculate the percentage increase.
Anonymous Quiz
13%
(a) 20%
20%
(b) 80%
30%
(c) 22%
37%
(d) 25%
π4
In a test, a candidate attempted only 8 questions and secured 50% marks in each of the questions. If he obtained a total of 40% in the test and all questions in the test carried equal marks, how many questions were there in the test? (UPSC-2015)
Anonymous Quiz
9%
(A) 8
48%
(B) 10
27%
(C) 15
16%
(16) 16
π5β€1
A student has to get 40% marks to pass in an examination. Suppose he gets 30 marks and fails by 30 marks, then what are the maximum marks in the examination? (UPSC-2018)
Anonymous Quiz
14%
(a) 100
27%
(b) 120
52%
(c) 150
8%
(d) 300
π4
Q. In a class, 60% of students are from India and 50% of the students are girls. If 30% of the Indian students are girls, then what percentage of foreign students are boys? (UPSC 2021)
Anonymous Quiz
5%
a. 45%
34%
b. 40%
27%
c. 30%
34%
d. 20%
π4
Rakesh borrows Rs. 600 from Himanshu at a rate of 10 paise per month per Rs. 2 (Simple Interest) for nine months. How much interest will he have to pay?
Anonymous Quiz
9%
(a) Rs. 45
17%
(b) Rs. 540
63%
(c) Rs. 270
10%
(d) Rs. 1350
π2
πAns. C | Explanation
Here, Rate = Rs. 0.10/month per Rs. 2
So, rate per Rs. 1 = Rs. 0.05/month
Simple Interest = Principal Γ Rate Γ Time = 600 Γ 0.05 Γ 9 = Rs. 270
Hence, option (c) is correct.
Here, Rate = Rs. 0.10/month per Rs. 2
So, rate per Rs. 1 = Rs. 0.05/month
Simple Interest = Principal Γ Rate Γ Time = 600 Γ 0.05 Γ 9 = Rs. 270
Hence, option (c) is correct.
π2
π UPSC CSE Mains - 2023 Warriors Group. An initiative by Guidance IAS Institute.
πIt will be a dedicated Mains-2023 Aspirants Group for Daily Answer Writing Practice.
πEvery Morning 5 Questions will be posted at around 9 a.m. The Model answers will be posted in the Evening at 9 p.m.
πEvery Model Answer will be having Current examples, data, diagrams, maps etc.
πThe Themes are Selected from both Static & Current portion (last 1.5 years of Hindu & I.E.) which have High Relevance & Probability to be asked in Mains - 2023.
πFor Ethics all the Casestudies are properly curated & renewed with respect to the current affairs of last 2 years.
πWe hope that the initiative will help you to find a peer group of aspirants writing Mains 2023.
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πIt will be a dedicated Mains-2023 Aspirants Group for Daily Answer Writing Practice.
πEvery Morning 5 Questions will be posted at around 9 a.m. The Model answers will be posted in the Evening at 9 p.m.
πEvery Model Answer will be having Current examples, data, diagrams, maps etc.
πThe Themes are Selected from both Static & Current portion (last 1.5 years of Hindu & I.E.) which have High Relevance & Probability to be asked in Mains - 2023.
πFor Ethics all the Casestudies are properly curated & renewed with respect to the current affairs of last 2 years.
πWe hope that the initiative will help you to find a peer group of aspirants writing Mains 2023.
πWe will not waste your Time. We are Ready, Are you Ready...
You can text at @Guidanceiasinstitute with your Prelims Hall Ticket, Name & Roll Number to Join.
Guidance IAS Team.
Share & Join: @UPSCFIX
π6
If Ξ± and Ξ² are two real numbers such that Ξ± + Ξ² = - q/p and Ξ±Ξ² = r/p, where 0<p<q<r (p, q, r are natural numbers), then which one of the following alternatives represents the highest value?
Anonymous Quiz
5%
(a) 1 / (Ξ± + Ξ²)
33%
(b) (1/ Ξ±) + (1/ Ξ²)
48%
(c) β 1/ (Ξ±Ξ²)
13%
(d) Ξ±Ξ²/(Ξ± + Ξ²)
π4
π Ans. C | Explanation
It is given that Ξ± + Ξ² = - q/p and Ξ±Ξ² = r/p, where 0<p<q<r
So, letβs assume p = 1, q = 2 and r = 3.
Putting these values in answer options, we get
(A) 1 / (Ξ± + Ξ²) = - p/q = - (1/2)
(B) (1/ Ξ±) + (1/ Ξ²) = (Ξ± + Ξ²)/ Ξ±Ξ² = -(q/p) Γ (p/r) = - (q/r) = - (2/3)
(C) β 1/ (Ξ±Ξ²) = -(p/r) = - (1/3)
(D) Ξ±Ξ²/(Ξ± + Ξ²) = r/p Γ (-p/q)= - r/q = - (3/2)
We can see that, - (1/3) is the greatest among the above values.
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It is given that Ξ± + Ξ² = - q/p and Ξ±Ξ² = r/p, where 0<p<q<r
So, letβs assume p = 1, q = 2 and r = 3.
Putting these values in answer options, we get
(A) 1 / (Ξ± + Ξ²) = - p/q = - (1/2)
(B) (1/ Ξ±) + (1/ Ξ²) = (Ξ± + Ξ²)/ Ξ±Ξ² = -(q/p) Γ (p/r) = - (q/r) = - (2/3)
(C) β 1/ (Ξ±Ξ²) = -(p/r) = - (1/3)
(D) Ξ±Ξ²/(Ξ± + Ξ²) = r/p Γ (-p/q)= - r/q = - (3/2)
We can see that, - (1/3) is the greatest among the above values.
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π3π₯2
Mr. Suresh owns a 5 metre Γ 4 metre coffee shop. He plans to tile the rectangular floor of this shop with grey-coloured square tiles. Each side of the tile measures 20 cm. What must be the total cost of fitting the tiles, if they cost Rs. 40 per piece?
Anonymous Quiz
3%
(a) Rs. 12,000
21%
(b) Rs. 16,000
24%
(c) Rs. 24,000
52%
(d) Rs. 20,000
π4π₯1
π Ans. D | Explanation
Area of coffee shop = 5 metre Γ 4 metre = 20 square metres
Area of one tile = 0.2 metres Γ 0.2 metre = 0.04 square metres
Number of tiles required = Area of rectangular region / Area of one square tile = 20 square metres / 0.04 square metres = 500
Therefore, total cost of fitting the tiles = number of tiles Γ cost of fitting 1 tile = 500 Γ 40 = Rs. 20,000
Hence, option (D) is the correct answer.
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Area of coffee shop = 5 metre Γ 4 metre = 20 square metres
Area of one tile = 0.2 metres Γ 0.2 metre = 0.04 square metres
Number of tiles required = Area of rectangular region / Area of one square tile = 20 square metres / 0.04 square metres = 500
Therefore, total cost of fitting the tiles = number of tiles Γ cost of fitting 1 tile = 500 Γ 40 = Rs. 20,000
Hence, option (D) is the correct answer.
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π8β€2
Q. A company X sold apple juice at cost price by mixing water in it and gained a profit of 25%. What must be the ratio of juice and water in the mixture?
Anonymous Quiz
7%
(a) 1:5
23%
(b) 3:2
66%
(c) 4:1
5%
(d) 2:3
π1
Ans. C
Explanation:
We know that, if we mix any liquid with water and sell it at cost price to gain a profit of x%, then the ratio of liquid and water is (100:x).
Here, x = 25%
Required ratio = 100:25 = 4:1
Explanation:
We know that, if we mix any liquid with water and sell it at cost price to gain a profit of x%, then the ratio of liquid and water is (100:x).
Here, x = 25%
Required ratio = 100:25 = 4:1
π4π₯1
Q. A number is multiplied by one-sixth, then divided by one-seventh, and then multiplied by seven-tenth. Result is what percent of the original number?
Anonymous Quiz
18%
(a) 49/6%
27%
(b) 50/3%
50%
(c) 245/3%
5%
(d) 5/3%
π1
π Ans. C | Explanation:
The best way to do this is to start with 100 and calculate the result.
The final number will be as follows:
[(100 Γ 1/6) Γ· 1/7] Γ 7/10
= (100/1) Γ (1/6) Γ (7/1) Γ (7/10)
= 245 /3 = 245/3%
So, the final number will be 245/3% of the original number.
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The best way to do this is to start with 100 and calculate the result.
The final number will be as follows:
[(100 Γ 1/6) Γ· 1/7] Γ 7/10
= (100/1) Γ (1/6) Γ (7/1) Γ (7/10)
= 245 /3 = 245/3%
So, the final number will be 245/3% of the original number.
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π7