प्रश्न और उत्तर का अभ्यास करें
8प्र: Find the next number in the series 14, 916, 2536,...... 3647 05b5cc771e4d2b4197774ffcb
5b5cc771e4d2b4197774ffcb- 14981false
- 26481false
- 34964true
- 46449false
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उत्तर : 3. "4964"
व्याख्या :
Answer: C) 4964 Explanation: The pattern is 12 22, 32 42, 52 62, ∴The next number= 72 82= 4964
प्र: 'वर्ण' शब्द का अर्थ नही होता हैं?
3646 061012e870b25de5a90f46cf4
61012e870b25de5a90f46cf4- 1अक्षरfalse
- 2जातिfalse
- 3रंगfalse
- 4आकाशtrue
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उत्तर : 4. "आकाश"
प्र: रेक्टिफायर एक इलेक्ट्रॉनिक उपकरण है इसका उपयोग किसे बदलने के लिए किया जाता है?
3645 05dc22a1296420169a020ca60
5dc22a1296420169a020ca60- 1AC वोल्टेज को DC वोल्टेज मेंtrue
- 2DC वोल्टेज को AC वोल्टेज मेंfalse
- 3स्क्वेयर पल्स में साइनसोइडल पल्सfalse
- 4इनमें से कोई नहींfalse
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उत्तर : 1. "AC वोल्टेज को DC वोल्टेज में"
प्र: fifteen persons are sitting around a circular table facing the centre. What is the probability that three particular persons sit together ? 3645 05b5cc731e4d2b4197774f7dd
5b5cc731e4d2b4197774f7dd- 13/91true
- 22/73false
- 31/91false
- 43/73false
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उत्तर : 1. "3/91"
व्याख्या :
Answer: A) 3/91 Explanation: In a circle of n different persons, the total number of arrangements possible = (n - 1)!Total number of arrangements = n(S) = (15 – 1)! = 14 !Taking three persons as a unit, total persons = 13 (in 4 units)Therefore no. of ways for these 13 persons to around the circular table = (13 - 1)! = 12!In any given unit, 3 particular person can sit in 3!. Hence total number of ways that any three person can sit =n(E) = 12! X 3!Therefore P (E) = probability of three persons sitting together = n(E) / n(S) = 12! X 3 ! / 14!= 12!x3x2 / 14x13x12! = 6/14x13 = 3/91
प्र: If 34 men completed 2/5th of a work in 8 days working 9 hours a day. How many more man should be engaged to finish the rest of the work in 6 days working 9 hours a day ? 3645 05b5cc6d9e4d2b4197774e807
5b5cc6d9e4d2b4197774e807- 1101 menfalse
- 2112 menfalse
- 3102 mentrue
- 4120 menfalse
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उत्तर : 3. "102 men"
व्याख्या :
Answer: C) 102 men Explanation: From the above formula i.e (m1 x t1/w1) = (m2 x t2/w2) so, [(34 x 8 x 9)/(2/5)] = [(M x 6 x 9)/(3/5)] so, M = 136 men Number of men to be added to finish the work = 136-34 = 102 men.
प्र: किस विकल्प में 'कुट - कूट' शब्द-युग्म का सही अर्थ-भेद है?
3643 0639096da51489f1da5f4294f
639096da51489f1da5f4294f- 1परिवार - योगfalse
- 2योग - परिवारfalse
- 3घर - पहाड़ की चोटीtrue
- 4तट - वंशfalse
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उत्तर : 3. "घर - पहाड़ की चोटी "
प्र: यदि A:B:C=2:3:4, है तो$$ ({a\over b}):({b\over c}):({c\over a})$$ का मान है 3642 15d1b1a478a754124194a7587
5d1b1a478a754124194a7587- 18:9:16false
- 28:9:12false
- 38:9:24true
- 44:9:16false
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उत्तर : 3. "8:9:24 "
प्र: a) In a family of 6 persons, there are two couples. b) The lawyer is the head of the family and has only two sons- Suresh and Rajesh- both teachers. c) Mrs. Veena and her mother-in-law both are lawyers. d) Suresh's wife is a Doctor and they have a son, Ankith. 1) What is the profession of Rajesh's wife ? 2) What is Ankith's grandfather's occupation ? 3642 05b5cc72ce4d2b4197774f778
5b5cc72ce4d2b4197774f778- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर :
व्याख्या :
Answer: 1) Rajesh's wife is Mrs. Veena and she is a lawyer. Answer: 2) The family doesn't have Ankith's grandfather. So, we can't determine.