10TH IS MUCH MORE EASIER THAN 9TH

If the 10^(th) term of an AP is 52 and 17^(th) term is 20 more than its 13^(th) term.Find the AP.

If the 10 th term of an A.Pis 52 and 17 th term is 20 more than the 13 th term,find the A.P.

If the 10th term of a GP is 9 and 4th term is 4, then what is its 7th term?

In a row of boys, if A who is 10th from the left and B who is 9th from the right interchange their positions, A becomes 15th from left. How many boys are there in the row?

If it is possible to make a meaningful word with the 2nd, the 6th, the 9th and the 12th letters of the word 'CONTRIBUTION', which of the following will be the last letter of that word? If more than one such word can be formed, give 'M' as the answer and if no such word can be formed, give 'X' as the answer.

Find the (i) 10th term of the A.P. 4,9,14,……. (ii) 7th term of the A.P. 6,10,14,………..