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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?

Find the A.P whose 10th term is 5 and 18th term is 77

The ratio of the 5th term from the beginning to the 5th term from the end in the binominal expanison of (2^((1)/(3)) + (1)/(2(3)^((1)/(3))))^10 is

Which of the following is the 10th to the left of the 18th from the left end of the above arrangement?

If you are 9th person in a queue starting from one end and 11th from another end, what is the number of persons in the queue?

In a row of boys ,Rajan is 10th from the right and Suraj is 10th from the left. When Rajan and Suraj interchange their positions ,Suraj will be 27th from the left. Which of the following will be Rajan's position from the right ?

In a queue, Amrita is 10th from the front while Mukul is 25th from behind and Mamta is just in the middle of the two. If there be 50 persons in the queue, what position does Mamta occupy from the front ? 1) 20th 2) 19th 3) 18th 4) 17th 5) None of these