GATE Practice Question and Answer
8Q: The school principal has received complaints from parents about bullying in the school yard during recess. He wants to investigate and end this situation as soon as possible, so he has asked the recess aides to watch closely. Which situation should the recess aides report to the principal ? 42079 05b5cc75ce4d2b4197774fc61
5b5cc75ce4d2b4197774fc61- 1A boy is sitting glumly on a bench reading a book and not interacting with his peers.false
- 2Two boys are playing a one-on-one game of basketball and are arguing over the last basket scored.false
- 3Three boys are huddled over a handheld video game, which isn’t supposed to be on school grounds.false
- 4Four girls are surrounding another girl and seem to have possession of her backpack.true
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Answer : 4. "Four girls are surrounding another girl and seem to have possession of her backpack."
Explanation :
Answer: D) Four girls are surrounding another girl and seem to have possession of her backpack. Explanation: Seeing four girls surrounding another girl, while in possession of her backpack, is the most suspicious of the incidents described.
Q: Two pipes A and B can separately fill a cistern in 10 and 15 minutes respectively. A person opens both the pipes together when the cistern should have been was full he finds the waste pipe open. He then closes the waste pipe and in another 3 minutes the cistern was full. In what time can the waste pipe empty the cistern when fill ? 35158 15b5cc6e5e4d2b4197774ecf7
5b5cc6e5e4d2b4197774ecf7- 18.21 minfalse
- 28 minfalse
- 38.57 mintrue
- 48.49 minfalse
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Answer : 3. "8.57 min"
Explanation :
Answer: C) 8.57 min Explanation: 1/10 + 1/15 = 1/6 x 3 = 1/2 1 - 1/2 = 1/2 1/10 + 1/15 - 1/x = 1/2 x = 8.57 min
Q: From a tank of petrol, which contains 200 litres of petrol, the seller replaces each time with kerosene when he sells 40 litres of petrol(or its mixture). Everytime he sells out only 40 litres of petrol(pure or impure). After replacing the petrol with kerosen 4th time, the total amount of kerosene in the mixture is 26461 25b5cc7d7e4d2b4197775151a
5b5cc7d7e4d2b4197775151a- 181.92Lfalse
- 296Lfalse
- 3118.08Ltrue
- 4None of thesefalse
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Answer : 3. "118.08L"
Explanation :
Answer: C) 118.08L Explanation: The amount of petrol left after 4 operations = 200 × 1-402004 = 200 × 454 = 200 × 256625 = 81.92 litres Hence the amount of kerosene = 200 - 81.92 = 118. 08 litres
Q: P, Q, R, S, T, U, V and W are sitting round the circle and are facing the centre:P is second to the right of T who is the neighbour of R and V.S is not the neighbour of P.V is the neighbour of U.Q is not between S and W. W is not between U and S. Then Who is sitting opposite to U ? 18251 05b5cc73de4d2b4197774f968
5b5cc73de4d2b4197774f968- 1Qfalse
- 2Ptrue
- 3Rfalse
- 4Wfalse
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Answer : 2. "P"
Explanation :
Answer: B) P Explanation: From the given information, the sitting arrangement can be P-Q-W-S-U-V-T-R i.e. in circular as From the above figure it is clear that opposite to U is P.
Q: Find the next number in the number series? 6, 6, 9, 18, 45, ? 17145 05b5cc64ae4d2b4197774bc20
5b5cc64ae4d2b4197774bc20- 187false
- 299.75false
- 3115.5false
- 4135true
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Answer : 4. "135"
Explanation :
Answer: D) 135 Explanation: The given number series is 6, 6, 9, 18, 45, ? Here the series follows a pattern that, 6 6 x 1 = 6 6 x 1.5 = 9 9 x 2 = 18 18 x 2.5 = 45 45 x 3 = 135 Hence, the next number in the given number series is 135.
Q: Yellow colour of papaya is due to 17027 05b5cc697e4d2b4197774c5af
5b5cc697e4d2b4197774c5af- 1Caricaxanthintrue
- 2Carotenefalse
- 3Lycopenefalse
- 4Papainfalse
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Answer : 1. "Caricaxanthin"
Explanation :
Answer: A) Caricaxanthin Explanation: Papayas are yellow due to the presence of carotene and xanthophyll pigments i.e, Caricaxanthin present in the chromoplasts of the fruit pulp. The coloration of the different tissues in plants is due to the plastids which are present in the cells. Leucoplasts are white in colour, chloroplasts are green in colour and chromoplasts are of various colours. These plastids can take any colour at different time. Therefore, green fruits ( chloroplasts) turn colurful (chromoplasts) at maturity.
Q: Which of the following data structure is linear type? 16736 05b5cc696e4d2b4197774c55b
5b5cc696e4d2b4197774c55b- 1Treefalse
- 2Binary Treefalse
- 3Queuetrue
- 4Graphfalse
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Answer : 3. "Queue"
Explanation :
Answer: C) Queue Explanation: A data structure is a specialized format for organizing and storing data. General data structure types include the array, the file, the record, the table, the tree, and so on. Any data structure is designed to organize data to suit a specific purpose so that it can be accessed and worked with in appropriate ways. Linear data structure: A linear data structure traverses the data elements sequentially, in which only one data element can directly be reached. Ex: Arrays, Linked Lists, Stack, Queue, Any type of List all are linear. Trees like Binary Tree, B Tree or B+ Tree are examples of non linear data structure.
Q: If the LCM and HCF of two numbers are equal, then the numbers must be 16497 05b5cc6bfe4d2b4197774daa1
5b5cc6bfe4d2b4197774daa1- 1Prime Numbersfalse
- 2Composite Numbersfalse
- 3Equaltrue
- 4Co- prime Numbersfalse
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Answer : 3. "Equal"
Explanation :
Answer: C) Equal Explanation: If LCM = HCF then, the two numbers are equal.