Explanation: q > p means that C will take more time than A to complete the same work. r

Explanation: No , if the slopes of AD and AB are positive that means AD and AB are not perpendicular to each other. Hence , the quadilaeral is not a rectangle.

Explanation: Only A alone is sufficient. From B, we can get only the sum of the fifth and the sixth numbers.

Explanation: R C O O B Y + N O O O --------------------- B U R T E N Here, different alphabets signify different digits. So, in order to find the value of the alphabets, we have to solve. How? Note: 2 single digit number makes a minimum as well as maximum carry of 1 (e.g. 9+9=18 carry 1). In the first column from right, B is directly beneath R. R will be added to nothing. In order to make R and B different, carry of 1 should be added to R as no other carry is possible. Now, from where this carry will come ? U is directly beneath C and C will be added to nothing. So, C will also have a carry of 1. Now, there is only one possibility. Carry of 1 should be added to 9 to generate a carry of 1 (as 9+1=10). So, C= 9 and U=0 as C will have a carry of 1. This will generate carry of 1 which will be added to R. Now on solving the value of "O" by hit and trial method. The values of alphabets are as follows: B=2, R=1, U=0, C=9, N=7, O=4, T=8, E=6.

Explanation: P @ Q -> P is the wife of Q ...(1)
Q $ T -> Q is the brother of T ...(2)
T # U -> T is the daughter of U
Hence, -> Q is the son of U ...(3)