6561, 81, 9, ____?
The problem presents a sequence of numbers: 6561, 81, 9, ____?. We need to identify the pattern in the given numbers to find the missing term. This type of problem often involves arithmetic progressions, geometric progressions, or patterns based on powers or roots.
B) 3 is the correct answer because it follows the established pattern where each term is the square root of the preceding term.
The question asks to identify the country where India intervened militarily under the codename 'Operation Cactus'. This requires knowledge of significant historical military operations conducted by India.
Operation Cactus was an intervention by the Indian Armed Forces in the Maldives in November 1988. The intervention was launched in response to a coup attempt by a group of Maldivians led by Abdullah Luthufi and backed by armed mercenaries from the People's Liberation Organisation of Tamil Eelam (PLOTE), a Sri Lankan Tamil secessionist organization.
The then Maldivian President Maumoon Abdul Gayoom requested military assistance from India. India responded swiftly by airlifting paratroopers from the 50th Independent Parachute Brigade to Gan and Hulhulé islands, followed by naval support. The operation was successful in thwarting the coup attempt, rescuing the President, and restoring order.
Therefore, 'Operation Cactus' is associated with the Maldives.
A) Maldives — 'Operation Cactus' was the codename for the Indian military intervention in the Maldives in 1988 to foil a coup attempt.
The question asks to identify the sport associated with the 'Azlan Shah Cup'. This is a general knowledge question about sports tournaments.
Correct Option: D) Hockey — The Sultan Azlan Shah Cup is a prominent international men's field hockey tournament held annually in Malaysia. It is named after Sultan Azlan Shah, who was a great patron of the sport.
The question asks to identify the type of plateau that the Malwa Plateau in India represents. This requires knowledge of different types of plateaus and the geological formation of the Malwa Plateau.
Correct Option: B) Lava plateau
To find the marked price, we need to work backward from the desired profit and the allowed discount. First, calculate the selling price required to achieve a 20% profit on the cost price. Then, use this selling price and the discount percentage to determine the marked price.
Thus, the tradesman should mark the article at Rs. 375.
Correct Option: C) 375
The question asks about a crucial element required for blood clotting. Blood clotting, or coagulation, is a complex process involving a cascade of reactions and various factors. Identifying the specific mineral ion essential for this process is key.
Correct Option: B) Calcium is essential for blood clotting. It acts as a cofactor for several clotting factors, facilitating the conversion of prothrombin to thrombin and fibrinogen to fibrin, which are crucial steps in clot formation.
The question asks to identify the causative agent of poliomyelitis from the given options. This requires knowledge of common viral diseases and their specific causative viruses.
Correct Option: B) Entero Virus
The question asks to identify which body does not participate in the election of the President of India. We need to recall the composition of the Electoral College for the Presidential election as defined in the Indian Constitution.
Members of Legislative Councils (Vidhan Parishad) do not take part in the election of the President of India. The Constitution explicitly limits the Electoral College to elected members of the Lok Sabha, Rajya Sabha, and State Legislative Assemblies (including Delhi and Puducherry).
The question asks about the number of pairs of spinal nerves in humans. This is a fundamental concept in human anatomy and neurobiology. The spinal nerves are part of the peripheral nervous system and emerge from the spinal cord, innervating various parts of the body.
Correct Option: B) 31. There are 31 pairs of spinal nerves in humans, comprising 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal pair.
6.4 × 3.8 × 4.2 × 0.3 =
To solve this problem, we need to multiply the given decimal numbers step-by-step. It's often easier to multiply two numbers at a time and then multiply the result by the next number. We also need to keep track of the decimal places.
Correct Option: A) 30.6432 is the correct product of the given numbers.