Verbal Reasoning - Mental Ability Questions

First letter series S,T,U,V
second and third letter series CD,EF,GH,IJ...
so answer = VIJ

First letter moves 6 steps forward. Second letter moves 6 steps backward.

It means that the first half of the alphabet is interchanged with second half of the alphabet. After making changes, nth letter from the left will be (n + 13)th letter of original series, ie English alphabet; If n is less than 14. But if n is more than 13, nth letter from left will be (n - 13)th letter from left.
In the given equation, we have to find out (13 - 7 =) 6th letter from right => (26 - 6 + 1 =) 21st letter from the left. Hence, required letter's position is more than 13; therefore the required letter is (21 - 13 =) 8th letter from left of original series, ie H.

Letters of the word PREMONITION are coded as follows:

Letters :  P    R    E    M    O    N    I    T    I    O    N

Code:        6    8    5    3    0    4    9    2    9    0    4

See the code below Is and Ns. Codes for I and N are 9 and 4 respectively. This indicates that the digits below each letters represent its code. Therefore, code for the word MONITOR is 3049208

When cut fruits and vegetables are kept in open, the vitamins in them get oxidised and remain of no use. 

The man's brother's father means his father is the only son of woman's grandfather

=> grandfather to the man also

=> Woman and the man are brother and sisters.

Firstly 17 tens = 17 x 10 = 170

17 tens = 170 in unit form can be written as 1 hundred, 7 tens, 0 ones.

Clothes are not washed properly in hard water because it does not form lather with soap. However, it is true that hard water contains many minerals.