Verbal Reasoning - Mental Ability Questions

14 notebooks of a class were corrected with ink pen while 22 notebooks were corrected with colour pencil. If 4 notebooks were corrected with both, what is the strength of class?

Which of the following interchanges in signs and numbers will make the given equation correct?
7 x 9 + 5 = 68

What should come in place of the question mark (?) in the following number series? 1, 3, 24, 360,8640, 302400, ?

Shubham's mother is the sister-in-law of Shashi and Shashi is the only daughter of Parmeshwar. Ravi is Shubham's brother. How is Shashi related to Ravi?

Select the related word/letters/number from the given alternatives.
Farmer : Plough:: Painter: ?

Choose the related word/letters/number from the given alternatives.
AF : BE : : ? : DH

If B = 2, K = 11; MAN = 0, SIN = 14, then what is the value of HOT?

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

7x6x8=678
8x9x7=987
6x5x7=567
5x4x6=?