Answer: D) Any one pair of A and B, B and C or C and A is sufficient Explanation: Let distance between A & B = d kmLet speed in still water = x kmphLet speed of current = y kmph from the given data,d/x = 2 From A) we get dFrom B) we get d/x+yFrom C) we get y   So, Any one pair of A and B, B and C or C and A is sufficient to give the answer i.e, the speed of upstream.

Answer: D) 43200 Explanation: There are total 9 letters in the word COMMITTEE in which there are 2M's, 2T's, 2E's. The number of ways in which 9 letters can be arranged = 9!2!×2!×2! = 45360   There are 4 vowels O,I,E,E in the given word. If the four vowels always come together, taking them as one letter we have to arrange 5 + 1 = 6 letters which include 2Ms and 2Ts and this be done in 6!2!×2! = 180 ways.   In which of 180 ways, the 4 vowels O,I,E,E remaining together can be arranged in 4!2! = 12 ways.   The number of ways in which the four vowels always come together = 180 x 12 = 2160.   Hence, the required number of ways in which the four vowels do not come together = 45360 - 2160 = 43200

Answer: A) Kolkata Explanation: It compiles and publishes atlases and maps on various themes of National importance. They are used for planning and research.

1. राजस्थान का पहला इंटीग्रेटेड स्टील प्लांट भीलवाड़ा में स्थापित किया।

2. भीलवाड़ा को राजस्थान का मैनचेस्टर कहा जाता है।

3. इस प्लांट से प्रत्यक्ष और अप्रत्यक्ष रूप से करीब दो हजार से अधिक लोगों को रोजगार मिलेगा।