Insta–DART (Daily Aptitude and Reasoning Test) 2020 - 21
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Considering the alarming importance of CSAT in UPSC CSE Prelims exam and with enormous requests we received recently, InsightsIAS has started Daily CSAT Test to ensure students practice CSAT Questions on a daily basis. Regular Practice would help one overcome the fear of CSAT too.
We are naming this initiative as Insta– DART – Daily Aptitude and Reasoning Test. We hope you will be able to use DART to hit bull’s eye in CSAT paper and comfortably score 100+ even in the most difficult question paper that UPSC can give you in CSP-2021. Your peace of mind after every step of this exam is very important for us.
Looking forward to your enthusiastic participation (both in sending us questions and solving them on daily basis on this portal).
Wish you all the best ! 🙂
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Question 1 of 5
1. Question
In how many ways, a committee of 3 men and 2 women can be formed out of a total of 4 men and 4 women?
Correct
Answer : d
= (4!/(3! * 1!) * (4!)/(2! * 2!)
= (4 *4 *3* 2 *1)/(2* 2)
= 4* 6 = 24
Incorrect
Answer : d
= (4!/(3! * 1!) * (4!)/(2! * 2!)
= (4 *4 *3* 2 *1)/(2* 2)
= 4* 6 = 24
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Question 2 of 5
2. Question
In how many ways, a cricket team 11 players can be made from 15 players if a particular player is never chosen?
Correct
Answer : b
Since, particular player is always chosen. It means that 11-1 = 10 players Are selected
Out of the remaining 15-1- 14 players.
∴Required number of ways =( 14!)/(10! ´4!)
= (14 *13 *12 *11)/(4 *3* 2 *1)
=(7* 13 *11)
= 91 * 11 = 1001
Incorrect
Answer : b
Since, particular player is always chosen. It means that 11-1 = 10 players Are selected
Out of the remaining 15-1- 14 players.
∴Required number of ways =( 14!)/(10! ´4!)
= (14 *13 *12 *11)/(4 *3* 2 *1)
=(7* 13 *11)
= 91 * 11 = 1001
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Question 3 of 5
3. Question
How many ways, a cricket team of 11 players can be made from 15 players, if a particular player is never chosen?
Correct
Answer : a
Since, particular player is never chosen.
It means that 11 players are selected out of
15- 1= 14 players.
∴Required number of ways = 364
Incorrect
Answer : a
Since, particular player is never chosen.
It means that 11 players are selected out of
15- 1= 14 players.
∴Required number of ways = 364
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Question 4 of 5
4. Question
How many straight lines can be drawn from 15 non-collinear points?
Correct
Answer: a
= 15C2
Required number of lines = (15* 14)/2 = 105
Incorrect
Answer: a
= 15C2
Required number of lines = (15* 14)/2 = 105
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Question 5 of 5
5. Question
There are 14 points in a plane, out of which 4 are collinear. Find the number of triangles made by these points.
Correct
Answer : b
= nCr
=12C3
∴Required number of triangles = (12* 11 *10)/6 = 220
Incorrect
Answer : b
= nCr
=12C3
∴Required number of triangles = (12* 11 *10)/6 = 220
