Question
Which utility software helps to protect the computer
system from viruses and prevent the computer system files from being corrupt?Solution
The correct answer is C
Two cards are drawn together from a pack of 52 cards. The probability that one is a club and one is a diamond?
A bag contains 6 purple balls, 9 yellow balls and 5 green balls. Three balls are drawn at random. Find the probability that at least two balls are yellow.
- 30 defective earphones got mixed with 150 non-defective earphones. A student randomly picks one earphone. Find the probability that it is defective.
A bag contains black and white balls, such that the probability of picking a black ball is 4/7. If the probability of picking two black balls without re...
A bag contains 3 blue, 2 green, and 5 black pens. If five pens are selected randomly, what is the probability that exactly two are green and three are b...
A bag contains 5 violet, 16 blue and 7 grey balls. Two balls are randomly drawn from the bag, what is the probability that a violet and a grey ball are ...
- A money bag has eight 50 paise coins, seven Rs. 2 coins, and ten Rs. 10 coins. If one coin falls out and is lost, what is the probability that the lost coi...
- A boy attended 5 lab evaluations, each having a total of 100 marks. His scores were 88, 76, 92, 81, and 70. He randomly reveals one of the scores to his fr...
A bag contains 13 white and some black balls. If the probability of drawing a black ball from the bag is 3 times that of drawing a white ball, find the ...
In a box, the ratio of green balls to yellow balls is 3:5. If 9 balls of each colour are added, the new ratio becomes 6:9.
Find the number of yel...
