Identify the odd one from the given groups of letters.

In a certain Language PALE is written as 2134 and EARTH is written as 41590 then How PEARL is written as____.

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
m_ane_nma_men_eam_an 

Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.
 30 : 48 :: 60 : ? :: 45 : 72

If D = 4 and G = 7 then GARDEN = ?

In a certain code language, ‘PEN’ is coded as ‘321028’. How will ‘TUB’ be coded as in that language?

4, 4, 8, 24, 96, 480, (?)

Which two signs have to be interchanged to correct the given equation?
52 + 64 – 16 ÷ 36 × 6=20