Which index type is most beneficial for queries that use

Select the pair that follows the same pattern as that followed by the two pairs given below. Both pairs follow the same pattern.

RJE : TID

What should come in place of? in the given series based on the English alphabetical order?

GUN, DWM, AYL, XAK, ?

Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series. 

xy_z_xxy_zbx_yx_bx_y_z_x

If ÷ implies =, × implies <, + implies >, – implies ×, > implies ÷,< implies +, = implies –, identify the correct expression. 

Read the given statements, labeled Assertion (A) and Reason (R), and select the most appropriate option with respect to them

Statements:

In a certain code language, ‘BAKE’ is coded as ‘2496’ and ‘CAKE’ is coded as ‘4369’. How is ‘B’ coded in that language? 

How many classes are there in the given picture? 

If the sign ‘×’ is interchanged with ‘÷’ and ‘–’ is interchanged with ‘+’, then what will be the value of the expression below?

In a certain code language, 'rivers trees grass' is coded as '22 44 66' and trees clouds birds' is coded as '44 99 88'.