Question
The sum of three consecutive natural numbers each
divisible by 4, is 240. The largest among them isSolution
 Let the required largest number be x. According to the question, x + x – 4 + x – 8 = 240 3x – 12 = 240 3x = 240 + 12 = 252 Therefore, x = 252/3 = 84
In a Bag, there are 20 Hairbands of three different colours; red, blue, and black. The probability of picking 2 red Hairbands at ...
In a lottery, there are 6 prizes and 30 blanks. A lottery is drawn at random. What is the probability of getting a prize?
...- There are three people A, B and C who are competing in a 100-meter race. If A is 50% more likely to win as B and B is twice as likely to win as C then what...
A bag has 7 pink, 4 black and 3 yellow balls while another bag has 5 pink, 6 yellow and 3 blue balls. A bag is selected at random and a ball drawn out ...
If the letters of the word HORIZON be arranged at random, what is the probability that all the vowels are together?
A box holds a total of 'p' purple balls and 5 silver balls. Two balls are drawn sequentially without replacement. The probability that both selected bal...
Two schools, A and B participate in a Quiz competition. The probability of A’s winning is 3/7 and the probability of B’s winning is 3/5. Wha...
The names of 17 students from section A, 18 students from section B and 19 students from section C were selected. The age of all the 54 students was dif...
In a jar, there are (x + 8) red balls, ‘x’ blue balls, and (x + 2) black balls. If the probability of picking two blue balls at random is (1/45), th...
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...