Which of the following sets of letters will be placed

House: Room :: World : ?

Select the option that is related to the third word in the same way as the second word is related to the first word. 

Find which one of the given words can be made from the letters of the given word.

‘ WIRELESS ’

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

Select the related number from the given alternatives.

82: 160 :: 36: ?

Singer : Chorus : : Fish : ?

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

If PET = 16520 and PETER = 16520518, then PREHEAT =

By interchanging the given two signs which of the following equation will be not correct?

× and –