11th Exam imp part

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

11th and 12 the pairs of ribs are called

The 3rd, 6th and 11th cranial nerves are

The 5th, 8th and 11th terms of a GP are a, b, c respectively. Show that b^(2)=ac .

The 5th term of an AP is 20 and the sum of its 7th and 11th terms is 64. The common difference of the AP is