Union Minister of State Dr Jitendra Singh launched India's first manned ocean mission Samudrayan at Chennai. With the launch of this Ocean Mission, India joins the elite club of 5 nations such as the USA, Russia, Japan, France and China to have such underwater vehicles for carrying out subsea activities. The Matsya 6000, the deep-sea vehicle under the Samudrayan initiative, is designed to carry three people in a titanium alloy personnel sphere of 2.1-metre diameter enclosed space. The mission is undertaken by the National Institute of Ocean Technology (NIOT) will be a part of the ₹6,000 crore Deep Ocean Mission.
In a group of 5 boys and 4 girls, 5 students have to be selected. In how many ways it can be done so that only 2 boys are included.
In how ways can the selection be made so that a particular member is always included?
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Geography books are always together.
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In how ways can the selection be made so that a particular member is always excluded?