Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें
8प्र: Find the odd one out ? Hawk , Parrot , Owl , Eagle 4416 05b5cc76ae4d2b4197774fe9d
5b5cc76ae4d2b4197774fe9d- 1Eaglefalse
- 2Owlfalse
- 3Parrottrue
- 4Hawkfalse
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 3. "Parrot"
व्याख्या :
Answer: C) Parrot Explanation: All except Parrot are birds of prey.
प्र: Find the next number in the series 141,137,146,130,155,119,... 4395 05b5cc771e4d2b4197774ffc1
5b5cc771e4d2b4197774ffc1- 1147false
- 2168true
- 3162false
- 4182false
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 2. "168"
व्याख्या :
Answer: B) 168 Explanation: The pattern is -4, +9,-16, +25, -36 The next number=119+49=168
प्र: The product of a number and its multiplicative inverse is 4382 05b5cc64de4d2b4197774bc70
5b5cc64de4d2b4197774bc70- 11true
- 20false
- 3-1false
- 4Infinityfalse
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 1. "1"
व्याख्या :
Answer: A) 1 Explanation: The mutiplicative inverse of a number is nothing but a reciprocal of a number. Now, the product of a number and its multiplicative inverse is always equal to 1. For example : Let the number be 15 Multiplicative inverse of 15 = 1/15 The product of a number and its multiplicative inverse is = 15 x 1/15 = 1.
प्र: The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is ? 4364 05b5cc6dce4d2b4197774e9c4
5b5cc6dce4d2b4197774e9c4- 18 kmphfalse
- 26 kmphtrue
- 37.5 kmphfalse
- 45.5 kmphfalse
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 2. "6 kmph"
व्याख्या :
Answer: B) 6 kmph Explanation: Speed of the stream = 1Motor boat speed in still water be = x kmphDown Stream = x + 1 kmphUp Stream = x - 1 kmph[35/(x + 1)] + [35/(x - 1)] = 12x = 6 kmph
प्र: Find the one which does not belong to that group ? 4358 05b5cc6ebe4d2b4197774eeaf
5b5cc6ebe4d2b4197774eeaf- 1KMNLfalse
- 2JLMKfalse
- 3PRSQfalse
- 4VWYZtrue
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 4. "VWYZ"
व्याख्या :
Answer: D) VWYZ Explanation: K+2 M+1 N-2 L, P+2 R+1 S-2 Q, V+1 W+2 Y+1 Z, J+2 L+1 M-2 K and W+2 Y+1 Z-2 X. Except VWYZ, all the other groups follow similar pattern.
प्र: Three taps I, J and K can fill a tank in 20,30and 40 minutes respectively. All the taps are opened simultaneously and after 5 minutes tap A was closed and then after 6 minutes tab B was closed .At the moment a leak developed which can empty the full tank in 70 minutes. What is the total time taken for the completely full ? 4351 05b5cc73de4d2b4197774f952
5b5cc73de4d2b4197774f952- 124.315 minutesfalse
- 226.166 minutestrue
- 322.154 minutesfalse
- 424 minutesfalse
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 2. "26.166 minutes"
व्याख्या :
Answer: B) 26.166 minutes Explanation: Upto first 5 minutes I, J and K will fill => 5[(1/20)+(1/30)+(1/40)] = 65/120 For next 6 minutes, J and K will fill => 6[(1/30)+(1/40)] = 42/120 So tank filled upto first 11 minutes = (65/120) + (42/120) = 107/120 So remaining tank = 13/120 Now at the moment filling with C and leakage @ 1/60 per minute= (1/40) - (1/70) = 3/280.So time taken to fill remaining 13/120 tank =(13/120) /(3/280) = 91/6 minutes Hence total time taken to completely fill the tank = 5 + 6 + 91/6 = 26.16 minutes.
प्र: A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If two marbles are picked at random, what is the probability that they are either blue or yellow ? 4331 05b5cc6dae4d2b4197774e8d7
5b5cc6dae4d2b4197774e8d7- 13/17false
- 24/21false
- 32/21true
- 45/17false
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 3. "2/21"
व्याख्या :
Answer: C) 2/21 Explanation: Given that there are three blue marbles, four red marbles, six green marbles and two yellow marbles. Probability that both marbles are blue = ³C₂/¹⁵C₂ = (3 x 2)/(15 x 14) = 1/35 Probability that both are yellow = ²C₂/¹⁵C₂ = (2 x 1)/(15 x 14) = 1/105 Probability that one blue and other is yellow = (³C₁ x ²C₁)/¹⁵C₂ = (2 x 3 x 2)/(15 x 14) = 2/35 Required probability = 1/35 + 1/105 + 2/35 = 3/35 + 1/105 = 1/35(3 + 1/3) = 10/(3 x 35) = 2/21
प्र: एक वस्तु पर 30 प्रतिशत छुट देने के बाद 40 प्रतिशत लाभ कमाने के लिए वस्तु का मूल्य कितने प्रतिशत बढ़ाकर अंकित करना चाहिए? 4298 05d133f3140daee3c552fcb29
5d133f3140daee3c552fcb29- 150%false
- 2100%true
- 3200%false
- 460%false
- उत्तर देखें
- Workspace
- SingleChoice