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Math Puzzle 33Covid19 has led the world to go through a phenomenal transition . Elearning is the future today. Stay Home , Stay Safe and keep learning!!! This math puzzle 33 is on radical,cyclic quadrilateral,sequence etc.1) A box contains five red marbles and seven white marbles. If one marble is drawn at random from the box, what is the probability that it is white? A. 1/5 B. 1/7 C. 5/7 D. 5/12 E. 7/12 2) If the n th term of a sequence is given by Tn = (1)^{n} 2^{n1} , then which of the following could be the 9th term of the sequence? A. 256 B. 128 C. 128 D. 256 E. 512 3) In a system where there are 100 minutes in an hour and 100 seconds in a minute, how many seconds are there in an hour? A. 3600 B. 60 C. 100 D. 10000 E. 1/100 4) If (a + 3) (a + k) = a 2 + 5a + p, then which of the following could be value of k and p? A. k = 3, p = 3 B. k = 1, p = 6 C. k = 2, p = 6 D. k = 2, p = 5 E. k = 2, p = 6 5) A box of chocolates contains 12 hard centres and 8 soft centres. One chocolate is taken at random and eaten; then a second chocolate is taken. What is the probability the one is a hard centre and one a soft center? A. 24/95 B. 48/95 C. 12/19 D. 4/5 E. 16/95 6) What is the area of the rectangle whose vertices are (a, 2b), (a, b), (3a, b) and (3a, 2b)? A. ab B. 3ab C. 4ab D. 8ab E. 12ab 7)Refer to the following definition: For all positive integers x, X =√x . Which of the following equals 3? A. 3 B. 6 C. 9 D. 27 E. 81 8) If the sum of interior angles of a polygon is five times the sum of its exterior angles, how many sides are there? A. 9 B. 12 C. 15 D. 20 E. 24 9) Bag A contains 3 white and 2 red balls. Bag B contains 1 white and 3 red balls. A ball is taken at random from Bag A and placed in Bag B. A ball is then chosen from Bag B. What is the probability that the ball taken from Bag B is red? A. 3/5 B. 9/25 C. 6/25 D. 1/5 E. 7/25 10) Each angle of a cyclic quadrilateral is either 110 0 or 70 0 . This quadrilateral must be a A. Rhombus B. Trapezium C. Parallelogram D. Square E. None of the above From Math puzzle 33 to Math Teasers Home Covid19 has affected physical interactions between people. Don't let it affect your learning.
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