GATE Practice Question and Answer
8Q: What is black when you buy it, red when you use it, and gray when you throw it away? 1708 05b5cc636e4d2b4197774ba52
5b5cc636e4d2b4197774ba52- 1Shoefalse
- 2Charcoaltrue
- 3Beltfalse
- 4All the abovefalse
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Answer : 2. "Charcoal"
Explanation :
Answer: B) Charcoal Explanation: It is Charcoal which is black when we buy it or when not being used. It gets red in appearance when put in use means to say when burning. And eventually when it's been consumed by fire or after getting burned out or used up, changes into ashes which look grey in color.
Q: Twenty times a positive integer is less than its square by 96. What is the integer ? 1708 05b5cc6e7e4d2b4197774ed74
5b5cc6e7e4d2b4197774ed74- 142false
- 236false
- 348false
- 424true
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Answer : 4. "24"
Explanation :
Answer: D) 24 Explanation: Let the integer be x. Then, x2 - 20x = 96 (x + 4)(x - 24) = 0 x = 24
Q: A word arranging device rearranges words step-by-step in a particular order according to set of rules. The device stops when the final result is obtained.Input: but going for crept te light sirStep 1: crept but going for te light sirStep 2: crept going light but for te sirStep 3: crept going light but for sir teAnd Step 3 is the last step for this input. Now, find out an appropriate step in the following question following the above rules. Question:Input: more fight cats cough sough acts ideaWhat will be the last step for this input ? 1708 05b5cc771e4d2b4197774fff8
5b5cc771e4d2b4197774fff8- 1cough fight sough acts cats idea moretrue
- 2cough fight sough acts cats more ideafalse
- 3cough more fight sough acts idea catsfalse
- 4none of thesefalse
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Answer : 1. "cough fight sough acts cats idea more"
Explanation :
Answer: A) cough fight sough acts cats idea more Explanation: Carefully obsrving the given arrangement, we find the following pattern:We observe that,first all the words with the highest number of letters are arranged in the alphabetical order, followed by the words with the second highest number of letters and so on.However, the position of only one word is altered at each step.Input: more fight cats cough sough acts ideaStep1: cough more fight cats sough acts ideaStep2: cough fight more cats sough acts ideaStep3: cough fight sough more cats acts ideaStep4: cough fight sough acts more cats ideaStep5: cough fight sough acts cats more ideaStep6: cough fight sough acts cats idea more Hence, the answer is A
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Answer :
Explanation :
The given letter equation implies that, 7 C in the R = 7 Colours in a Rainbow.
Q: A student multiplied a number by 2/5 instead of 5/2. What is the percentage error in evaluation ? 1707 05b5cc6c0e4d2b4197774dae4
5b5cc6c0e4d2b4197774dae4- 152%false
- 264%false
- 384%true
- 477%false
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Answer : 3. "84%"
Explanation :
Answer: C) 84% Explanation: Let the number be 'x' Then, according to the given data, 52x-25x52xx100 = 2125x100 = 84%
Q: Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is ? 1707 05b5cc6dfe4d2b4197774eabc
5b5cc6dfe4d2b4197774eabc- 15true
- 24false
- 37false
- 46false
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Answer : 1. "5"
Explanation :
Answer: A) 5 Explanation: Let the number be x. Then, 3x2 - 4x = x + 50 3x2- 5x - 50 = 0 (3x + 10)(x - 5) = 0 x = 5
Q: What approximate value will come in place of question mark (?) in the following question ? (49.001)2 = ? 1707 05b5cc6c7e4d2b4197774dec3
5b5cc6c7e4d2b4197774dec3- 12500false
- 22400true
- 32600false
- 42300false
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Answer : 2. "2400"
Explanation :
Answer: B) 2400 Explanation: Given (49.001)2 = ? => =~ 49 x 49 =~ 2401 =~ 2400
Q: I am the first on Earth, the second in Heaven. I appear two times in a week you can only see me once in a year. Although I am in the middle of the sea, l am not found in month, but l am in February, June, September, October, November & December. Who am I? 1707 05b5cc6a6e4d2b4197774cd27
5b5cc6a6e4d2b4197774cd27- Show AnswerHide Answer
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Answer :
Explanation :
The letter 'E'. As of the above given data, It is in the 1st place in Earth, 2nd in Heaven and in the middle of the Sea. It appears once in a Year and twice in a Week. It is present in February, June, September, October, November & December. But not in the Month. Hence, it is the letter 'E'.