The sum of three numbers is 15.If the second number is subtracted from the sum of first and third numbers then we get 5.When the third number is subtracted from the sum of twice the first number and the second number,we get4.Find the three numbers.

Find the sum of first n natural numbers.

If three numbers are added the sum is 15. If the second number is subtracted from the sum of first and third number then we get 5 and if twice the first number is added to the second and the third number is subtracted from the sum we get 4 . Use matrices to find the numbers.

If three numbers are added, their sum is 2 . If 2 times the second number is subtracted from the sum of first and third number, we get 8 and if three times the first number is added to the sum of second and third number, we get 4 . Find the numbers using matrices.

Write the sum of first n odd natural numbers.

The sum of three numbers is 2. If twice the second number is added to the sum of first and third number, we get 1. On adding five times the first number to the sum of second and third we get 6. Find the three numbers by using matrices

Find the sum of the first n natural numbers.

Find three numbers in G.P such that their product is 216 and the sum of first and third number is 20.

Find the sum of first n even natural numbers.