Verbal Reasoning - Mental Ability Questions

If + means ÷, ­ means x, x means ­ and ÷ means +, which of the following will be the value of expression 16÷8­4+2x4=?

If 19 $ 7 = 312 and 23 $ 9 = 448, then 31 $ 11 = ?

In the following question, select the number which can be placed at the sign of ? from the given alternatives.

How many triangles are there in the given figure?

Of the six members of a panel sitting in a row, A is to the right of C, but left of B. E is sitting left of C and right of D, who is sitting to the right of F. Find the members sitting at the two ends of the row.

Sham goes to his friend's house that is straight 10 Km from his house. On his way back, he takes a right turn and walks 2 Km and again takes a right turn and walks for 10 Km before he takes a right turn again. How much distance is Sham still away from his house?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

xy_kx_zk_yzk xyz_ _

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
6, 18, 54, ? , 486, 1458