You have 5 boxes of muffins. Each muffin weighs 100 grams, except for hollow muffins contained in one box, where each muffin weighs 90 grams. Given a scale, how could you tell which box has hollow muffins in just one measurement?

A sugar mill owner adds 20% impurities in his product and cheats the consumer by 30% while selling. He claims to sell the items on cost price?

What is the % profit he is making?

50%

0%

20%

71%

What is the minimum count of use of weighing balance to find a defective ball that has more weight out of the 9 balls. All 8 others are identical and have same weight?

  1. 4
  2. 3
  3. 2
  4. 1

A man purchases 2 equal lots of apples. In first lot he at the rate of 7 for 1 Rs. and in second 5 for 1Rs. He then sold them at  40 for 12. Find his profit or loss percentage.

In a deck of cards, what is the least amount of cards you must take to be guaranteed at least one four-of-a-kind?

Last 2 digits of N are 38 and there are 3 factors between root(N) and 1. Then what is the number of factors of N.

  1. 9
  2. 8
  3. 6
  4. either (1) or (2)

You are blindfolded and given a deck of cards in which exactly 16 cards are facing up. You have to divide it into 2 piles having exactly same number of cards facing up. How would you do it. 

 

2N has 2f factors and 6N has 3f factors, then which of the following can be the value of N

  1. 1379
  2. 1593
  3. 1681
  4. 1998

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