Class 7th ch 1 notes

Find the 20th term of the AP whose 7th term is 24 less than the 11th term, first term being 12.

Class- 7 Math profit and loss

If sum of the 3rd and the 8th terms of an AP is 7 and the sum of the 7th and 14th terms is -3 , then find the 10th term.

Find a if the 7th and 18th terms of the expansion (2+a)^(50) are equal.

The sum of 5th and 9th term of an A.P. is 72 and the sum of 7th and 12th terms is 97 . Find that

Find the A.P. whose 7th and 13th terms are respectively 34 and 64