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Three dice (each having six faces with each face showing one number from 1 to 6) are rolled. What is the number of possible outcomes such that at leas
Groups, each containing 3 boys, are to be formed out of 5 boys – A, B, C, D and E – such that no one group contains both C and D together. What is the
Six equidistant vertical lines are drawn on a board. Six equidistant horizontal lines are also drawn on the board cutting the six vertical lines and t
The correct answer is option (b): 35.
This question was asked in UPSC CSE Prelims 2007, GS Paper 1, as Question 135. It falls under Science & Technology > Quantitative Aptitude.
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
UPSC has asked 176 questions from Quantitative Aptitude (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.