GATE Practice Question and Answer
8Q: 4 45 of 259.99 = ? % of 1247.9 2034 05b5cc662e4d2b4197774bea1
5b5cc662e4d2b4197774bea1- 196false
- 2100true
- 378false
- 488false
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Answer : 2. "100"
Explanation :
Answer: B) 100 Explanation: Given 4 45 of 259.99 = ? % of 1247.9 24/5 x 260 = ? x 1248/100 ? = 1248 x 100/1248 ? = 100.
Q: 5 + 2 x 10 = 2034 05b5cc622e4d2b4197774b7e9
5b5cc622e4d2b4197774b7e9- 170false
- 220false
- 325true
- 452false
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Answer : 3. "25"
Explanation :
Answer: C) 25 Explanation: According to BODMAS rule, After multiplication only, addition is done. Hence, 5 + 2 x 10 = 5 + 20 = 25.
Q: Second and third class levers are differentiated by 2033 05b5cc611e4d2b4197774b67d
5b5cc611e4d2b4197774b67d- 1the location of the loadtrue
- 2the location of the fulcrumfalse
- 3the presence of multiple loadsfalse
- 4the type of fulcrum presentfalse
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Answer : 1. "the location of the load"
Explanation :
Answer: A) the location of the load Explanation:
Q: Vishal is 24th from either end of the row of boys ? How many boys are there in the row ? 2032 05b5cc777e4d2b4197775009d
5b5cc777e4d2b4197775009d- 148false
- 249false
- 346false
- 447true
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Answer : 4. "47"
Explanation :
Answer: D) 47 Explanation: Given that Vishal is 24th from either end of the row i.e from two sides 1 2 3 4 5 . . . . . .24 23 22 21 20 . . . . . 5 4 3 2 1 Here before Vishal there are 23 members and after Vishal there are 23 members = 23+1+23 --> 47 members in the row.
Q: The heat from the sun reaches earth through Convection. 2031 05b5cc69ce4d2b4197774c85f
5b5cc69ce4d2b4197774c85f- 1TRUEfalse
- 2FALSEtrue
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Answer : 2. "FALSE"
Explanation :
Answer: B) FALSE Explanation: The given statement, The heat from the sun reaches earth through Convection is FALSE. Heat from the sun actually reaches the earth through Radiation. The process occurs through electromagnetic radiation, specifically, in which molecules are warmed when the heat reaches them, and these molecules then warm other molecules touching them, which continues until we feel the sun's heat.
Q: The cost price of an article is 54% of the marked price. Calculate the gain percent after allowing a discount of 15% ? 2031 05b5cc6d6e4d2b4197774e660
5b5cc6d6e4d2b4197774e660- 151.32 %false
- 249.23 %false
- 348.4 %true
- 446.8 %false
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Answer : 3. "48.4 %"
Explanation :
Answer: C) 48.4 % Explanation: Let marked price = Rs. 100. Then, C.P. = RS. 54, S.P. = Rs. 85Gain % = 31/64 x 100 = 48.4%.
Q: The mean of 100 observations is 40. It is found that an observation 84 was misread as 48. Then the correct mean is ? 2030 05b5cc6c0e4d2b4197774dab2
5b5cc6c0e4d2b4197774dab2- 140.36true
- 241.24false
- 341.92false
- 442.05false
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Answer : 1. "40.36"
Explanation :
Answer: A) 40.36 Explanation: Given, mean of 100 observations is 40 => Total of 100 observations = 40 x 100 = 4000 84 is misread as 48 => Difference = 84 - 48 = 36 => Now, new total of 100 observations = 4000 + 36 = 4036 Correct Mean = 4036/100 = 40.36
Q: A take twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in ? 2030 05b5cc6dbe4d2b4197774e927
5b5cc6dbe4d2b4197774e927- 18 hrsfalse
- 212 hrsfalse
- 36 hrstrue
- 44 hrsfalse
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Answer : 3. "6 hrs"
Explanation :
Answer: C) 6 hrs Explanation: Suppose A, B and C take x, x/2 and x/3 respectively to finish the work. Then, (1/x + 2/x + 3/x) = 1/2 => 6/x = 1/2 => x = 12 So, B takes 6 hours to finish the work.