If L=+, M= - , N = ×, P=÷ then 5 N 5 P 5 L 5 M 5 =?

Which one will replace the question mark?

Direction: In the following, select the related word from the given alternatives.
Heat : Convection :: Space : ?

Ram started walking from a mall. First, he walked 3 km. in North direction. From there he took a right turn and walked 3 km. Then he turned right and walked 5 km. Then he again took a right turn and walked 7 km. what is the mini mum distance between Mall and Kartik's last position. 

In a string of 20 beads, the average weight of the first 14 beads is 25 grams and that of the last 6 beads is 8 grams. What is the average weight of all the beads?

Choose the correct alternative.
Fire : Ashes :: Explosion : ? 

cccbb_aa_cc_bbbaa_c 

In the given figure, how many wooden plates are there?