Question
Which of the following element is required for the
conversion of the solar energy?Solution
Silicon is what is known as a semi-conductor, meaning that it shares some of the properties of metals and some of those of an electrical insulator, making it a key ingredient in solar cells. Thus, this element is required for the solar energy conversion.
One five letter word is to be formed taking all letters – U, Z, M, O and Q. What is the probability that this is word formed will contain all vowe...
In a bag, the ratio of yellow and orange marbles is 4:5 respectively, and the ratio of orange and purple marbles is 1:3 respectively. If the total numbe...
A box contains 8 yellow marbles, ‘x’ blue marbles and 12 white marbles. A box contains 5 yellow marbles, 2 blue marbles and 3 white marbles. The pro...
A bag contains 5 red balls, 4 blue balls, and 3 green balls. If three balls are drawn randomly, what is the probability that all three balls are of diff...
35 defective headphones got packed with 105 non-defective headphones. A customer randomly chooses one headphone. Find the probability that it is defective.
A bag holds 'a' red bands and 5 green bands. If two bands are drawn sequentially at random without replacement, the probability that both selected bands...
A bag contains 4 black balls, 6 white balls and 5 red balls. Two balls are drawn simultaneously. Find the probability that both the balls are of same c...
The probability of selecting a rotten egg randomly from a basket of 1050 eggs is 0.36. What is the number of rotten eggs in the basket?
Two balls are drawn successively without replacement from a bag containing 4 red balls, 5 blue balls, and 6 green balls. What is the probability that on...
- A jar contains 'z' white balls and 9 black balls. If the probability of getting a white ball is 4/7, then find the probability of getting different coloure...
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