Answer :

Solution :

The given series: Z, WV, RQP

In the above series, each time the number of letters in the elements is increased by 1.

So, the next element will have four letters.

If we assign a number to each in alphabetical order i.e. A = 1, B = 2, C = 3, ….;

the corresponding numbers for the above series will be Z (26), WV (23, 22), RQP (18, 17, 16)

The difference between the first letters of the first two elements is 26 – 23 = 3

The difference between the first letters of the second and third elements is 23 – 18 = 5

So, the difference between the first letters of the third and fourth elements will be 7

So, the starting letter of the fourth element will be 11th (18 – 7 = 11) letter in the alphabetical order i.e. the starting letter will be K.

The next element in the series will be KJIH