1.
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?
6.
Namita walks 14 metres towards west, then turns to her right and walks 14 metres and then turns to her left and walks 10 metres. Again turning to her left she walks 14 metres. What is the shortest distance (in-metres) between her starting point and the present position?
15.
Kashish goes 30 metres North, then turns right and walks 40 metres, then again turns right and walks 20 metres, then again turns right and walks 40 metres. How many meters is he from his original position ?