प्रश्न और उत्तर का अभ्यास करें
8प्र: One card is drawn from a pack of 52 cards, each of the 52 cards being equally likely to be drawn find the probability the card drawn is red. 1271 05b5cc6c8e4d2b4197774df1e
5b5cc6c8e4d2b4197774df1e- 12/3false
- 21/2true
- 31/52false
- 413/51false
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उत्तर : 2. "1/2"
व्याख्या :
Answer: B) 1/2 Explanation: We know that: When one card is drawn from a pack of 52 cards The numbers of possible outcomes n(s) = 52 We know that there are 26 red cards in the pack of 52 cards⇒ The numbers of favorable outcomes n(E) = 26 Probability of occurrence of an event: P(E)=Number of favorable outcomes/Numeber of possible outcomes=n(E)/n(S) ∴ required probability = 26/52 = 1/2.
प्र: Who has been appointed as the Election Commissioner of India ? 1436 05b5cc6c8e4d2b4197774df19
5b5cc6c8e4d2b4197774df19- 1S. Y. Quraishifalse
- 2Sunil Aroratrue
- 3H. S. Brahmafalse
- 4Nasim Zaidifalse
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उत्तर : 2. "Sunil Arora"
व्याख्या :
Answer: B) Sunil Arora Explanation:
प्र: With which Bank, Solar energy services company Freyr Energy has tied up to offer term loans ? 1358 05b5cc6c8e4d2b4197774df14
5b5cc6c8e4d2b4197774df14- 1Axis Banktrue
- 2United Bankfalse
- 3SBIfalse
- 4Union Bankfalse
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उत्तर : 1. "Axis Bank"
व्याख्या :
Answer: A) Axis Bank Explanation:
प्र: In what time a 360 m. long train moving at the speed of 44 km/hr will cross a 140 m. long bridge ? 1393 05b5cc6c8e4d2b4197774df0f
5b5cc6c8e4d2b4197774df0f- 136 secfalse
- 239 secfalse
- 341 sectrue
- 443 secfalse
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उत्तर : 3. "41 sec"
व्याख्या :
Answer: C) 41 sec Explanation: Speed = 44 kmph x 5/18 = 110/9 m/s We know that, Time = distance/speed Time = (360 + 140) / (110/9) = 500 x 9/110 = 41 sec.
प्र: The breadth of a rectangular field is 75% of its length. If perimeter of the field is 1050 m, what will be th area of field ? 1399 05b5cc6c8e4d2b4197774df0a
5b5cc6c8e4d2b4197774df0a- 165700 sq.mfalse
- 254500 sq.mfalse
- 378700 sq.mfalse
- 467500 sq.mtrue
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उत्तर : 4. "67500 sq.m"
व्याख्या :
Answer: D) 67500 sq.m Explanation: Let the length be 'l' and breadth be 'b'. b = l × 3/4__________(a) 2(l+b) = 1050 l+b = 525___________(b) From equations (a) and (b), l = 300m, b = 225 m Area = l × b = 300 × 225 = 67500 sq.m.
प्र: What is the Probability of all cars not clashing each other ? 1574 05b5cc6c8e4d2b4197774df05
5b5cc6c8e4d2b4197774df05- 11/8false
- 20false
- 31/4true
- 41false
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उत्तर : 3. "1/4"
व्याख्या :
Answer: C) 1/4 Explanation: Non collision can happen only when all the cars move in same direction. That is either all cars moving in clockwise direction or all cars moving in anti clockwise direction.P(all cars not colliding) = P(all cars moving in the same direction) = P(all cars moving in clockwise direction) + P(all cars moving in anticlockwise direction) = [p(A --> C) x p(C --> B) x p(B --> A)] + [p(A --> B) x p(B --> C) x p(C --> A)] = [1/2 x 1/2 x 1/2] + [1/2 x 1/2 x 1/2] = 1/8 + 1/8 = 1/4
प्र: A man can row 8 kmh in still water. If the river is running at 2 kmh, it takes 4 hrs more upstream than to go downstream for the same distance. Then the distance is given by 1118 05b5cc6c8e4d2b4197774df00
5b5cc6c8e4d2b4197774df00- 154 kmsfalse
- 232 kmsfalse
- 345 kmsfalse
- 460 kmstrue
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उत्तर : 4. "60 kms"
व्याख्या :
Answer: D) 60 kms Explanation: Let the distance be d. d8-2-d8+2 = 4 => 2d = 120 => d = 60 kms.
प्र: Statements :- All kids are God. No God is a Human. Some Human are Son. All Son are Men. Conclusions :- (a) Some Son are not God. (b) Some Men are Human. 2442 05b5cc6c8e4d2b4197774defb
5b5cc6c8e4d2b4197774defb- 1Only A followsfalse
- 2Only B followsfalse
- 3Both (A) and (B) followstrue
- 4A) and (B) follows D)false
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उत्तर : 3. "Both (A) and (B) follows"
व्याख्या :
Answer: C) Both (A) and (B) follows Explanation:

