Ram and syam were playing a game and krithi who is 1 year younger than ram was watching them play. Here is their conversation.Ram: shyam, think of a number in your mind and then double it.(Shyam told the number to krithi and the number was 5)Ram: add 6 to the result and then find the half of the number.Shyam did the calculation and got the result as (5+5+6)/2= 8.Ram : then subtract the number that you thought in the starting from the result, 3 is left behind.Krithi was so surprised by this and asked ram how did he get to know, he told her that he is a magician and started laughing. *
Answers
Answer:
because at last he subtracted (5 - 2 = 3) that's why he thought that he is magician.
Solution :-
Let us assume that, Shyam think of the number was x .
step 1) :- Ram asked to double the number .
→ Result = 2 * x = 2x
step 2) :- Ram asked to add 6 to the result and then find half of the number .
→ New result = (2x + 6)/2 = 2(x + 3)/2 = (x + 3)
step 3) :- subtract the number that you thought and result will be 3 .
→ Final result = (x + 3) - 3 = x + 3 - 3 = x = original number .
therefore, we can conclude that, the above condition will satisfy for all positive and negative integers . .
Example :- Let us think of a negative integer, say (-6) .
→ step 1) :- (-6) * 2 = (-12)
→ step 2) :- (-12 + 6)/2 = (-6/2) = (-3)
→ step 3) :- (-3) - (-6) = (-3) + 6 = 3 (Ans.)
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