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There are 200 questions in a 3 h examination. Among 200 questions, 50 are from Mathematics, 100 are from GK and 50 are from Science. Ram spent twice as much time on each Mathematics question as for each other question. How many minutes did he spend on Mathematics questions ?

What will come in place of the question mark(?) in the following series of English alphabet? AE CG EI GK ?

Unique enterprise is dealing in auto spare parts. With the expansion in business the enterprise found that the decisions are delayed and level of coordination is coming down. The CEO of the company called for a meeting of all the managers. Ayush, a newly appointed manager suggested that company should have its own internet so that all the employees can interact and pass important information to each other through internet. Even short meeting of different departments can be conducted through Video conferencing to take fast action. The CEO linked the idea and installed an internet connection for connecting all the employees on line. Which type of e-commerce is suggested by Mr Ayush? Explain.

Let a_1,a_2,a_3…………., a_n be positive numbers in G.P. For each n let A_n, G_n, H_n be respectively the arithmetic mean geometric mean and harmonic mean of a_1,a_2,……..,a_n On the basis of above information answer the following question: A_k,G_k,H_k are in (A) A.P. (B) G.P. (C) H.P. (D) none of these