Mathematical Puzzle

Fill the question mark to correct the equation
? + ? + ? + ? + 80 + 90 = 100
Negative figures not allowed
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One of your friends comes to you with a simple mathematical equation.
25 – 55 + (85 + 65) = ?
You solve the equation to get 120 as the result and tells him that it was as easy as eating a pie.
To this, your friend reverts, “You won’t believe that the actual answer to this question is 5!”You are left dumbfounded at this statement. How can this be true?
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In the Iowa University convocation photo, If Director of the university is standing at the 9th position from both the ends of the row.
Can you find out how many people are standing in that row?
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There are two glasses in front of you. One of the glasses is full of coke and the other glass is full of lemonade. You take a spoonful of coke and mix it into the glass of lemonade. Now the lemonade glass has a mixture of coke and lemonade. You take a spoonful of that mixture and mix it inside the coke glass.
Now what do you think – The glass with coke has more quantity of lemonade or the glass with lemonade have more quantity of coke mixed with it?
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What is the least number of Candidates needed to appear in a examination of 300 marks, such that there is greater than a 50% chance that at least two of the candidates will have same marks?
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There are 24 Kids in a classroom. 12 Kids are wearing socks and 8 are wearing Shoes. 6 Kids are wearing both.
How many are Bare Feet ?
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