Numbers 1 to 20 are marked on balls of equal size one on each and one ball is drawn at a random. Find the probability of getting a number divisible by either 3 or 4.
Divide Rs.79.20 between 7 men, 11 women, and 5 boys so that each woman may have three times as much as a boy, and a man as much as a woman and a boy together, find how much each person receives.
The product of the first and last term of an AP is 160. The sum of alternative terms starting from the second term is 66. If there are 7 terms in an AP. Find the A.P.
Kajal borrowed Rs. 6400 from Saloni at compound interest for 2 years. The rate of interest for first year being 10% p.a. and 8% per annum for the second year. Calculate the amount that Kajal has to return to Saloni after 2 years.
A customer deposits Rs. 7000 each on 1st April and 1st October of a year. At the end of the year, what amount he would have gained by the way of interest if a bank offers 8% compound interest calculated on a half-yearly basis?
Three numbers are in AP and the other three numbers are in G.P. The sum of the corresponding terms of these progressions are 45, 59, and 109. The sum of all the terms of the AP is 129. Find the sum of all the terms of G.P.
In a class of 7 girls and 8 boys, 13 students are chosen at random. Find the probability that 6 girls and 7 boys are chosen.
The ratio of the weight of four family members P, Q, R, and S is 5:4:3:2. If Q’s weight is 10 kg more than R’s weight, then what is the weight of S?
A basket contains 2 black, 7 red, and 5 white balls. 2 balls are drawn at random. Find the probability for the balls to be of different colors.
What is the number that should be added to the numbers 4, 10, and 28, so that we get the numbers which are in continued proportion?
The contents of two vessels containing water and milk are in the ratio 1 : 2 and 2 : 5 are mixed in the ratio 1 : 4. The resulting mixture will have water and milk in the ratio:
In a class of 7 girls and 8 boys, 13 students are chosen at random. Find the probability that all the girls are chosen.
