Verbal Reasoning - Mental Ability Questions

If P denotes multiply, T denotes subtraction, M denotes addition, B denotes division then 28B7P8T6M4 = ?

If ' + ' means minus , ' - ' means multiplication , ' ÷ ' means plus , and ' x ' means division , then 15 - 3 + 10 x 5 ÷ 5

If 70$7 = -10, 50$5 = -10 and 40$8 = -5, then find the value of 10$2 = ?

If 'HARBOUR' is written as 'IBSCPVS' , how is 'HABITAT' written in that code?

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
ERADICATE

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.

1.5, 9/4, 3, ? , 4.5, 21/4

'Car' is related to 'Garage' in the same way as 'Hen' is related to ___.

Select the related word/letters/number from the given alternatives.
GT : IV : : KX : ?