1. When the time is 3:15, what is the angle between the hour and minute hand?
2. There are 10 machines producing gold coins. One of the machine is producing coins that are one gram light. If you can only weigh once, how can you tell which machine is making defective coins?

give 4 apples to 4 kids and give the last kid apple with the basket.

(n+1)/2   = 50(50+1)/2 = 1275
OR

Easy way to do it is as follows Pair up the 1st number with the last number ie 1 and 50 which adds up to 51 Pair up 2nd and second from last ie 2 and 49 which adds up to 51 There are 25 such pairs from 1 to 50 so you multiply 51 times 25 to get your answer. In one step its 25 x 51 = 1275 Thanks for playing.


what is the difference?