11.
In the following series of numbers, find out how many times, 1 , 3 and 7 have appeared together, 7 being in the middle and 1 and 3 on either side of 7?
12.
If R is denoted by N, D is denoted by T, K is denoted by U, O is denoted by I, E is denoted by R, T is denoted by O, U is denoted by P and C is denoted by E, then how will the word “DUCK” be written as?