Find the sum of geometric progression, 40, 20, 10, 5, …..
21 is divided into three parts which are in arithmetic progression (A.P.) in such a way that the sum of their square is 179. Find the smallest part.
Present average age of A, B and C together is 44 years. Age of B is 12 Years hence from now will be 260% more than age of A, Four years ago from now whi...
The fourth term of an arithmetic progression is 6. Then the sum of first seven terms is:
What is the mean value of the following set of data?
9, 11, 13, 15, 12, 10, 14, 16
What is least number which when successively divided by 6, 4 and 4 leaves a remainder 5, 3 and 3 respectively?
If A and B are two sets such that the number of elements in A is 20, a number of elements in B is 18 and the number of elements in both A and B is 10, f...
The 11th term of an AP is 80 less than the first term. If the second term is 88, find the third term.
The marks obtained by 15 students out of a maximum of 25 in a test are given as 13, 11, 16, 15, 18, 12, 13, 14, 10, 22, 21, 20, 17, and 24. Find the sum...
What is the mean of the following numbers:
45, 50, 55, 60, 65
