CAT Practice Question and Answer
8Q: What is name of Three Indians who has made it to the MIT Technology Review magazine's Innovators under 35 list in 2017 ? 1295 05b5cc6cae4d2b4197774e08b
5b5cc6cae4d2b4197774e08b- 1Suchi Sariafalse
- 2Radha Boyafalse
- 3Neha Narkhedefalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Explanation :
Answer: D) All of the above Explanation:
Q: The average age of 7 boys is increased by 1 year when one of tem whose age is replaced by a girl. What is the age of the girl ? 1799 05b5cc6cae4d2b4197774e086
5b5cc6cae4d2b4197774e086- 133 yrsfalse
- 227 yrsfalse
- 321 yrsfalse
- 429 yrstrue
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Answer : 4. "29 yrs"
Explanation :
Answer: D) 29 yrs Explanation: Let the avg age of 7 boys be 'p' yearsLet the age of the girl be 'q' yearsFrom given data,The age of 7 boys = 7p yearsNow the new average = (p + 1) when 22 yrs is replaced by qNow the age of all 7 will become = 7(p + 1) yrsHence, 7p - 22 + q = 7(p + 1) yrs7p - 22 + q = 7p + 7q = 22 + 7 = 29 Therefore, the age of girl = q = 29 years.
Q: Find the length of a train if it takes 10 seconds to cross a pole and double of this time to cross a platform of length 200 mts ? 1189 05b5cc6cae4d2b4197774e081
5b5cc6cae4d2b4197774e081- 1180 mtsfalse
- 2190 mtsfalse
- 3200 mtstrue
- 4210 mtsfalse
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Answer : 3. "200 mts"
Explanation :
Answer: C) 200 mts Explanation: Let the length of the train be 'L' mts let the speed of the train be 'S' m/s Given it crosses a pole in 10 sec=> L/S = 10 ......(1)Given it takes 20 sec (double of pole) to cross a platform of length 200 mts => (L + 200)/S = 20 => L/S + 200/S = 20 But from (1) L/S = 10 => 200/S = 20 - 10 => S = 20 m/s Then, from (1) => L = 10 x 20 = 200 mts. Hence, the length of the train = 200 mts.
Q: Which naxal affected district police has been selected for the International Association of Chiefs of Police (IACP) award this year for its community policing initiative focusing on the rehabilitation of Naxals ? 1199 05b5cc6cae4d2b4197774e07c
5b5cc6cae4d2b4197774e07c- 1Bastar Police, Chhattisgarhtrue
- 2Lucknow Police, UPfalse
- 3Patna Police , Biharfalse
- 4Jaipur Police, Rajasthanfalse
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Answer : 1. "Bastar Police, Chhattisgarh"
Explanation :
Answer: A) Bastar Police, Chhattisgarh Explanation:
Q: Proclamation of Emergency under Article 352 has been done How many times ? 1290 05b5cc6cae4d2b4197774e077
5b5cc6cae4d2b4197774e077- 14false
- 23true
- 32false
- 41false
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Answer : 2. "3"
Explanation :
Answer: B) 3 Explanation:
Q: Who did not have an important role in the Swadeshi Movement ? 1646 05b5cc6cae4d2b4197774e072
5b5cc6cae4d2b4197774e072- 1Muslimsfalse
- 2Studentsfalse
- 3Womenfalse
- 4Peasantstrue
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Answer : 4. "Peasants"
Explanation :
Answer: D) Peasants Explanation:
Q: The length of a rectangle is 10 cm more than the breadth. Find the diagonal length of rectangle if perimeter is 44 cm ? 1183 05b5cc6cae4d2b4197774e06d
5b5cc6cae4d2b4197774e06d- 112.50 cmfalse
- 214.21 cmfalse
- 315.98 cmfalse
- 417.08 cmtrue
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Answer : 4. "17.08 cm"
Explanation :
Answer: D) 17.08 cm Explanation: Let the length of the rectangle = L cm Then the breadth of the rectangle = (L - 10) cm Perimeter of a rectangle = 2(L + B) cm => 44 = 2(L + L - 10) => 44 = 4L - 20 => 4L = 64 => L = 16 cm => B = L - 10 = 6 cm Diagonal = L2+B2 = 162+62 = 17.08 cm
Q: Mary is 12 years younger to Pinky. After 3 years, the ratio of their ages will be 5:8. If the present age of Sam is the sum of ages of Mary and Pinky, then what was the age of Sam 15 years back ? 1915 05b5cc6cae4d2b4197774e068
5b5cc6cae4d2b4197774e068- 131 yearstrue
- 237 yearsfalse
- 346 yearsfalse
- 429 yearsfalse
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Answer : 1. "31 years"
Explanation :
Answer: A) 31 years Explanation: Let the present age of Pinky be x years Then the age of Mary is x - 12 years After 3 years, Ratio of MaryPinky = x - 9x + 3 = 58 8x - 72 = 5x +15 => 3x = 87 => x = 29 => Age of Pinky = 29 years => Age of Mary = 29 - 12 = 17 years Present age of Sam = 29 + 17 = 46 Before 15 years Sam age = 46 - 15 = 31 years.