Pseb 6th Class Sst 19th Lesson Question/Answer

Class 7th ch 1 notes

11th class English model paper solution

The sum of the 4th and the 8th terms of an A.P. is 24 and the sum of the 6th and the 10th terms of the same A.P. is 44. Find the first three terms of the A.P.

If in any binomial expansion a, b, c and d be the 6th, 7th, 8th and 9th terms respectively, prove that (b^2-ac)/(c^2-bd)=(4a)/(3c)