Logical Reasoning Basics – How to solve coin picking / matchstick related problems?

LOGICAL REASONING BASICS – HOW TO SOLVE COIN PICKING / MATCHSTICK RELATED PROBLEMS? How to solve coin picking-

In this post, we will figure out how to tackle Logical Reasoning Problems dependent on coins and matchsticks picking puzzles. To see how precisely these sorts of puzzles resemble, we should begin the post with a basic model. The technique to understand the model will give better knowledge in order to how to move toward these puzzles.

Two savvy players An and B are playing a coin game in which they can get 1, 2, 3 or 4 coins. They have 78 coins and the player who picks the last coin will lose the game. An and B play on the other hand and A plays the main move. What number of coins should A pick from the outset so his success is free of number of coins B picks in his first move?

Method to solve:

To win the game A must leave only 1 coins for B to pick up for B’s last move. If A leaves 2 coins then B will pick up 1 coin forcing A to pick up the last coin. Similar condition is when 3, 4 or 5 coins are left for B to pick after A’s move. Hence, A can leave only 1 coin for B to pick which will make A as the winner. For A’s last move, he should be left with 2, 3, 4 or 5 coins which means his second last move should ensure that only 6 coins are left.