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Let n be the number of people present. For every handshake, 2 persons are required. Since each handshake is between two persons, the total number of handshakes = nC2 =28 n! /{(n-2)! * 2!} = 28 n(n-1) = 56 So, n =8
Which of the following statements about rainfall in India is/are correct?
1. Most of the rainfall in India is due to the South-West monsoon
...To achieve a geosynchronous Earth orbit, a spacecraft should initially be launched into an elliptical orbit with what approximate apoapsis altitude?
What phenomenon occurs during Equinox days?
Consider the following statements concerning the Peninsular block of India:
1. The Thar Desert is part of the Peninsular block.
2. Th...
Which ocean is the smallest by surface area?
The retreating Monsoon gives rainfall to:
The "Great Barrier Reef" is located off the coast of which country?
The redshift theory is associated with ________.
Which mountain range system is the highest and most extensive in Europe?
Which countries does the Somali Current flow past in the Western Indian Ocean?
