Question
If x : y = 3 : 4, then (7x – 4y) : (3x + 2y) =
?Solution
x: y = 3 : 4, then (7x – 4y) : (3x + 2y) x=3, y=4 = (7×3 – 4×4) : (3×3 + 2×4) = 5 : 17
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.
A box contains 8 red, 5 green, and 7 blue balls. Two balls are drawn at random without replacement. What is the probability that both balls drawn are of...
There are ‘x’ white balls and 5 black balls in a jar. If the probability of picking a white ball is 2/3, then calculate the probability that the two...
Tom and Jerry throw alternatively a pair of dice. Tom wins if he throws 8 before Jerry throws 7 and Jerry wins if he throws 7 before Tom throws 8. Find...
What is the probability that three S’s come consecutively in the word ‘SUCCESSION’?
Two cards are drawn successively without replacement from a standard deck of 52 cards. Find the probability that both cards are of the same suit.
- Bag A contains 3 red, 4 black, 8 blue and 5 yellow balls. Bag B contains 5 red, 2 black, 4 blue and 3 yellow balls. Find the probability of drawing 2 blue ...
When two dice are thrown, what is the probability that sum of the number appeared is 4 or 5?
what is the probability that at least one of them narrates an incident truthfully.
A bag contains 5 red balls, 4 black balls and 8 white balls. Two balls are drawn simultaneously. Find the probability that both the balls are of same c...
