What is the shortcut key to "Undo" the last action in a

Question: Among 6 trees, A, B, C, D, E and F each having a different height, which tree is the third tallest?

Statement:

Choose the alternative which closely resembles the mirror image of the given combination.

Select the option that is related to the third term on the same basis as the second term is related to the first term.

ABROAD : ZCPQXG :: MARKET : ?

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.

831 * 3 * 13 * 45 * 245 * 1

X is the mother of L. C is the wife of L. D is the son of C. D has a sister named F. How is F related to L?

Study the given pattern carefully and select the number from among the given options that can replace the question mark (?) in it.

In a code language, 'PARUL' is coded as RDTXN and 'MADHU' is coded as ODFKW. How will 'VIJAY' be coded in the same language?

In a certain code language, ‘COWS’ is coded as ‘7935’ and ‘OILY’ is coded as ‘2568’. What is the code for ‘O’ in that language?

In a certain code language, '893' means 'Shahid likes cakes', '137' means 'cakes are delicious', and '274' means 'we are girls'.