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 the left. How many boys are there in the row ?

How many 6's are there in the following sequence that are immediately preceeded by 3 but not immediately followed by 0?

3 6 9 0 6 9 3 6 9 3 6 6 3 6 0 6 3 3 6 0

If three groups could be formed using the given figures only once, these groups would be ___.

If three groups could be formed using the given figures only once, these groups would be ___.

If the first 10 terms and the last 10 terms of the given expression are interchanged in such a way that the first term is interchanged with the last, the second with the second last, the third with the third last and soon, what will the fifth term from the right be in the new arrangement?

RB75E%M3W48Q9#B2A$MS

Nitin ranks 23rd from the top in a class of 42. What will be his rank from the last?

A$1%MB#6&NC=3!OD+KP

Starting from 1 till O (inclusive of both), if every alternate letter or number or symbol is dropped then the fifth term from right is

If the second half of the given series is reversed, then what will be the fifth term to the left of the ninth term from the right?

9$YX8N6OLBUJZT@1QFD%

In the given series is written in the reverse order, then what will be the 5th term to the left of the 10th term from right end?

R+JM2$#QR?*O@7F3