Answer: B) a power structure in which each member knows his or her own place Explanation: Hierarchy is a system of ranking in which members of a particular society are ranked in an ascending order depending on various factors.   Hence, the term hierarchy refers to a power structure in which each member knows his or her own place.

Answer: B) Option B Explanation: Man walked 6 km at 1.5 kmph, again he walked 8 km at speed of 2 kmph and 40 km at a speed of 8kmphtime taken indivisually: => 6/1.5 = 4 m=> 8/2 = 4 m=> 40/8 = 5 m   Average speed of man= total distance/ total time=> 54/13 = 4213 kmph

Answer: A) Jakarta Explanation: The ASEAN Headquarters is located in Jakarta, Indonesia.   ASEAN is The Association of Southeast Asian Nations is a group of ten Southeast Asian countries. It was formed on 8th August 1967. The 10 countries in ASEAN are Indonesia, Malaysia, Philippines, Singapore, Brunei, Myanmar, Cambodia, Laos, Vietnam and Thailand.   Its main purpose include the acceleration of economic growth, social progress, cultural development among its members, the protection of the peace and stability of the region, and to provide opportunities for member countries to discuss differences peacefully.

Answer: A) Maharashtra Explanation: The Maharashtra Government has recently approved Ghodazari Wildlife Sanctuary in Chandrapur district as a new wildlife sanctuary in the state.

Answer: D) XZV Explanation: In the given series, each letter moves seven letters forward to obtain the next.So, XZV replaces ? in the series.

Answer: B) the horizontal sum of individual demand curves Explanation:

Answer: C) 2 Explanation: Let workdone 1 boy in 1 day be b and that of 1 girl be g From the given data, 4(5b + 3g) = 23 20b + 12g = 23 .......(a)   2(3b + 2g) = 7 6b + 4g = 7 ........(b)   Solving (a) & (b), we get b = 1, g = 1/4   Let number og girls required be 'p' 6(7 x 1 + p x 1/4) = 45 => p = 2.   Hence, number of girls required = 2

Answer: D) उपरोक्त सभी स्पष्टीकरण: एक ऑपरेटिंग सिस्टम के तीन मुख्य कार्य होते हैं: (1) कंप्यूटर के संसाधनों का प्रबंधन करना, जैसे कि सेंट्रल प्रोसेसिंग यूनिट, मेमोरी, डिस्क ड्राइव और प्रिंटर, (2) एक यूजर इंटरफेस स्थापित करना, और (3) निष्पादित करना और एप्लिकेशन सॉफ्टवेयर के लिए सेवाएं प्रदान करते हैं।