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Since the distance is same in all the conditions. Therefore, Average speed = 3xyz/(xy + yz + zx) Average speed = 3 x 12 x 21 x 36/(12 x 21 + 21 x 36 + 12 x 36) Average speed = 3 x 12 x 21 x 36/(252 + 756 + 432) = 27216/1440 = 18.9 km/hr
Out of 6 white marbles, 3 blue marbles, in how many ways we select one or more marbles?
Out of three girls and five boys, five children are to be randomly selected for a dance programme. What is the probability that all the selected childre...
The names of 8 students from section A, 9 students from section B and 10 students from section C were selected. The age of all the 27 students was diffe...
A bag contains 4 red balls, 5 blue balls, and 6 green balls. Two balls are drawn at random. What is the probability that both balls are of the same color?
A bag contains 12 white and some black balls. If the probability of drawing a black ball from the bag is thrice that of drawing a white ball, fin...
A box contains 12 yellow marbles, ‘x’ blue marbles and 12 white marbles. A box contains 5 yellow marbles, 2 blue marbles and 3 white marbles. The ...
A bag contains 8 Green and 10 Red balls. One ball is drawn at random. What is the probability that the ball drawn is Red?
Integers 11, 12, 13, 14 are written on 4 cards they are well shuffled. Two cards are taken at random without replacement. What is the probability that t...
Anna is participating in a trivia game with 6 questions, each with 3 choices. Only one choice is correct per question. If Anna guesses on all questions,...
There are three types of maggi masala maggi, aata maggi and vegetable maggi in a bag. The probability of picking a vegetable maggi at random is 6/11. Th...
