UPSC CSAT 2026 | Game Changer for APSC CCE 2025 | By - JP Sir

Added: 2026-05-27

[00:01:19]So very good to all of you. Welcome to advertise academy.

[00:01:24]So discuss recently UPSC CS 2020 five. Okay.

[00:01:37]just uh discuss CS26.

[00:02:04]Okay.

[00:02:06]GSP.

[00:02:08]Okay. But obviously I admit it.

[00:02:30]July similar kind of situation we may face in our examination. Okay.

[00:02:41]66.67 Six seven marks. That is 67.

[00:02:57]Okay.

[00:03:10]without know losing our patience.

[00:03:29]Okay.

[00:03:35]Okay.

[00:03:45]First question. Okay.

[00:04:02]I have to qualify. I have to secure that minimal marks.

[00:04:08]Okay.

[00:04:20]Question.

[00:04:22]So seven person A B C D E F Z travel by three cars X Y Z A and another two of them travel by X.

[00:04:35]Okay.

[00:04:44]XY Z.

[00:04:47]These are the cars.

[00:04:56]Okay.

[00:05:01]Okay.

[00:05:04]Seven person A B C D E F Z travel by three cars.

[00:05:12]A and another two of them travel by X.

[00:05:28]only travel with G.

[00:05:34]Okay. C travels by Z.

[00:05:46]C travels by Z but B does not travel by Y.

[00:06:01]Okay.

[00:06:04]Only E travels with G. Suppose E R Z C travels by Z but B does not travel by Y.

[00:06:23]Okay. Besides, A and B do not travel by the same car.

[00:06:39]I have placed 5%.

[00:06:47]A B A B C.

[00:06:54]Okay.

[00:06:58]E N Z.

[00:07:00]D N Z. Sorry.

[00:07:05]E N Z.

[00:07:12]Wait.

[00:07:14]N D N D D D D D D D D D D D D D D D D D D D D D N N N N N N N N N N N N N N N N N N N N F F D D D D D D D D D D D D D D D D D D D D N N N N N N N N N N N N N N N N N N N N F F Okay, no one travel alone.

[00:07:34]So this is the correct option.

[00:07:38]only with this is not the correct answer.

[00:07:51]Okay, option B is the correct answer.

[00:08:05]C with B. So C with B in car.

[00:08:10]Okay. Just 2.5 marks.

[00:08:27]Okay. It's all about our patience, our attitude.

[00:08:38]just keep okay don't stick to a particular question okay I hope this is a doable question this is a doable question CMS patience.

[00:09:17]Okay. C will be deciding factor.

[00:09:20]Deciding factor.

[00:09:24]Okay. Fine.

[00:09:28]I think equation.

[00:09:37]So we'll go to the next question.

[00:09:40]Eda question CC 2026.

[00:09:47]In an objective type question.

[00:09:50]Okay. Objective type question.

[00:09:53]Five marks are awarded for correct answer.

[00:10:03]A student attempted all the question and got a score of 69.

[00:10:22]A student attempted all the questions and got 69 marks. He had been awarded four marks for correct answer. Had he been awarded four marks for correct answer and one marks for deducted one marks deducted for a wrong answer, he would score 84.

[00:10:42]84 numbered.

[00:10:51]Okay. Then how many questions were there in the question?

[00:10:59]Okay.

[00:11:01]We have to make two question.

[00:11:09]Okay. So sorry.

[00:11:21]So correct case one. So suppose this is my case one I will get five X marks two marks.

[00:11:42]ultimately 69. This is my first case.

[00:11:52]Okay. So this is what 4x one marks y. So you will get 80 one marks. So this is my case.

[00:12:22]Now we will solve this equation.

[00:12:25]solve. So can I solve co multiplied by two? Okay, here you'll find 8x.

[00:12:34]Okay, 8x * 2 column form. This is uh 8x sorry just wait 5x - y = 69 4x - y = 81 solve when you multip by two you'll find 8x okay y so you'll find 8x - y = 162 sous this is plus - y get cancel - 3x 5 x - 8 x - 3x = 69 - to minus 99.

[00:13:41]So minus minus get cancel you'll get x = 33.

[00:13:49]So x = 33.

[00:13:53]Okay. So now come to the equation. This 5x - y = 69.

[00:14:03]5 into 33 - y = 69. So you will get 150.

[00:14:15]You will get - y = 69 - 5 into 33 165. So you will get - y is equal to 68 - 165. You'll get 90.

[00:14:34]six.

[00:14:39]This imp plus y is equal to your uh 48.

[00:14:47]y = 48. Now x + y is equal to what? Your number of question. So x is equal to what? 33. Y is equal to what? Your 48. So that means your number of question 81. So B is the correct answer.

[00:15:20]question with patience. You have to solve it.

[00:15:28]Okay.

[00:15:44]Okay.

[00:16:04]Okay.

[00:16:12]Now come to next questionable question.

[00:16:20]A person saves 10% of his salary every month. Okay.

[00:16:28]If his salary increase by 12%.

[00:16:33]and the expenditure increased by 10%.

[00:16:37]Then what will be the change in his saving?

[00:16:54]he get 100.

[00:16:56]Okay.

[00:17:09]You save 10%.

[00:17:30]increase.

[00:17:44]Okay.

[00:17:48]10% 9 expend 9.

[00:17:58]Okay.

[00:18:01]99.

[00:18:24]13% sorry 12% Okay.

[00:19:02]Ultimately 30%.

[00:19:08]Saving is increased by 30%. Easy question. Just simple interest number system.

[00:19:35]Okay.

[00:19:54]We have to identify those easy questions.

[00:20:03]tomorrow. Was it by Again another question. The ratio of male to female worker in two companies A and B is 13 is to 10 and 7 is to 5.

[00:20:52]A company if both the companies have the same number of female worker then what is the ratio of the total number of worker A to that of B.

[00:21:16]Okay. So okay 13 is to 10 is to 5.

[00:21:42]So male 13x female 10 x male 7 y female 5 y this is female.

[00:22:00]Okay this is male. This is male. This is female. This is company B. This is company A.

[00:22:10]Okay.

[00:22:19]That means what? That means 5 y = 10 x 5 y female in B is equal to female in A.

[00:22:37]Okay.

[00:22:40]y = x y = x.

[00:22:52]Okay. So y = x. So 7 into 2 5 into 2 14x 10 x. So total employee total employee total employee 23.

[00:23:34]company A is equal to female number in company B. Okay. So ultimately ratio to company A or company B 23 is to 24 ratio proportional question. So option B is the correct answer.

[00:23:55]Ratio proportional ratio.

[00:24:13]So next interesting question.

[00:24:20]What is the minimum number of times one need to measure to get 280 L of water from a tank if measuring cylinders are 1 liter, 6 L, 25 L and 100 LE.

[00:24:49]Okay.

[00:24:54]298 298 Lind 6 L 25 L 100 L minimum number.

[00:25:11]So what I will do? So 290 minus one Okay.

[00:25:55]Easy question.

[00:26:00]298 L 6 L 25 L 100 L minimum minimum minimum number Literus.

[00:26:33]So ultimately I will find what? 298 L.

[00:26:46]Okay.

[00:26:49]So I hope no other formul Then again another question. Three variables XY Z take values 2 3 4 or five such that their values are always distinct always distinct equation.

[00:27:15]If m and n denote largest possible value and the smallest possible value respectively for the expression xyz. that maybe just wait. Let me check the question.

[00:27:53]All right. This is X into Y. Okay. This is x into y not x y. Okay. This is x into y plus z. Okay.

[00:28:30]This is xx into y.

[00:28:34]Okay. Three variables x, y and z take values 2 3 4 or five such that their values are always distinct. If m and n denote the largest possible value and the smallest possible value then respectively for the expression x y plus z then mus okayip largest number.

[00:29:24]Okay. So express number 4 into 5 + 3.

[00:29:49]This is your 23 question smallest smallest value.

[00:30:07]Okay, that means xy + z equal to smallest value 2 into 3 plus 10.

[00:30:23]Okay, so this is the small this is the highest this is the smallest mus.

[00:30:30]What is the value of m? Now m is 23 n is 10 that is 13.

[00:30:38]Option C.

[00:30:46]X number 2.

[00:31:00]So smallest.

[00:31:09]Okay.

[00:31:22]Next question. This blood has a son and a daughter.

[00:31:43]S is the mother of T.

[00:31:47]Okay. S is R's spouse. Okay. Q and R are children of P. Then how Q is related to S?

[00:32:01]P has a son and daughter. Suppose this is P.

[00:32:11]Okay. P. He has one son and one daughter.

[00:32:24]Okay. P has a son and a daughter. S is the mother of T.

[00:32:30]Okay.

[00:32:32]S is the mother of T.

[00:32:37]S is the mother of T.

[00:32:40]S is the spouse of R. S is the spouse of R.

[00:32:50]Okay. Q and R Q and R are Q and R are children of P. Q and R.

[00:33:03]Okay.

[00:33:06]So S is mother.

[00:33:10]R is husband. Husband.

[00:33:12]QN R. Q and R Q and R Q and R are children of P what we will get here.

[00:33:35]So this is P. P has a son and a daughter.

[00:33:43]Q is the daughter. Now how Q is related to S? So Q.

[00:33:55]So Q is the sister of the husband of S. S or husband or Moniac.

[00:34:08]Okay. So, option D is the correct answer. So, this is a family tree. So, this is P.

[00:34:14]P has a daughter and a son.

[00:34:20]Okay.

[00:34:21]P has a son and a daughter.

[00:34:26]S is the mother of T. S is the mother of Tale.

[00:34:36]SP are children of P relation that is the Q is the sister of the husband of S.

[00:34:55]Okay. So this is the easy equation from blood relation.

[00:35:01]So next at a question, how many three-digit numbers can be expressed as an integral power of two?

[00:35:13]How many threedigit number can be expressed as an integral power of two?

[00:35:19]Okay. So 2^ 1 = 2 2² = 4 2 cube = 8 2 ^ 4 is = 16 2^ 5 = 32 the^ 6 = 64.

[00:35:40]Okay. 2 to the^ 8 is equal to sorry 2^ 7 2^ 7 is equal to 182. 2 to the^ 8 is equal to 265.

[00:36:08]2^ 9 is equal to 512 5 1 162 2 8 is equal to 250 2 7 is equal to 182 the power 8 = calculation.

[00:36:40]Okay. 2^ 6 = 64. 2 the^ 7 is equal to 8 uh 128 2 7 2 8 is equal to 2^ 8 is equal to when you multiply this with 2 you'll find uh 256 okay then 2^ 9 is equal to uh 2 1 5 5 1 2 and 2 ^ 10 is equal to your 4 2 10 1 10 2 4 okay soak express how many digit number can be expressed as an integral power of two soit number so so this 1 2 3.

[00:37:47]Okay, getting answer C three is the correct answer.

[00:37:53]Okay, easy question.

[00:37:59]Next following statement.

[00:38:07]Every red is blue.

[00:38:09]Every red is blue.

[00:38:13]Every red is blue.

[00:38:20]Okay. Every red is blue. Every blue is green. Every red is a blue. Every blue is green. Every green is yellow.

[00:38:33]Every green is yellow.

[00:38:42]Which of the following statement denote the PQR are correct? Denoted by PQR are correct. Okay. Every blue is yellow.

[00:38:50]Every blue is yellow. Every blue is yellow. Yes. Every red is green. Every red is green. Yes. Every red is green.

[00:39:02]Every red is yellow. Every red is yellow. All P, QR are correct. So answer to D at A one of the most easiest question.

[00:39:35]Okay.

[00:39:38]A person facing A person facing east is travel 4 kilome straight sorry kilome towards east north south east east west.

[00:40:02]Okay. So is travel then turns right and travel 3 km then turns right and travel this is 4 km and this is 3 km 3 km right turn and further he turn left and travel 2 km C E and finally turns left.

[00:40:38]Okay. And travel 3 km left.

[00:40:48]This is point E.

[00:40:52]the minimum distance between the final point and the initial point and the direction in which the person is facing towards okay final point this is the 2 km distance towards the north.

[00:41:25]Okay. So, 6 km.

[00:41:28]This is the correct answer.

[00:41:34]Okay. So, Okay.

[00:41:57]Then another important question.

[00:42:05]In a sequence of numbers, each number and the first two is the sum of the two immediately preceding the numbers from it. If the first two numbers in the sequence are four and seven, then what is the sixth number? In a sequence of numbers, each number other than the first two is the sum of the immediately two preceding numbers.

[00:42:40]Okay.

[00:42:42]If the first number sum of the preceding number is the 11.

[00:42:58]Next 11 that is 18.

[00:43:04]Six number second fourth. Next number I will find 29. This is the fifth number. And what is the sixth number now?

[00:43:20]Okay. Sixth number when you when you add 18 + 29 next number will be 7 47. So this is the correct answer.

[00:43:33]47 is the correct answer.

[00:43:41]Okay.

[00:43:43]So, hope It will take more than 3 hours to analyze the entire paper. Okay.

[00:44:17]We have to select those question. Okay.

[00:44:24]In a sequence of numbers, each number is the sum of the two immediately preceding numbers.

[00:44:36]Okay.

[00:44:43]Okay.

[00:44:48]So, thank you everyone for joining the class. Okay. Thank you and good night.

[00:44:54]Take care.

[00:44:57]Thank you.