#1671 - Maths Sets Puzzles

In a school, 280 students studied chemistry, 254 students studied physics and 280 students studied biology.

97 students studied chemistry as well as physics, 138 students studied physics as well as biology and 152 students studied chemistry as well as biology.

73 students studied all the three branches.

Can you find out the total number of students?

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There are a total of 500 students.To make you understand clearly, we are posting a venn diagram for the same.

#1672 - Algebra Cipher Puzzle

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

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80

21 Q 7 R 9 S 10 P 13
= 21 / 7 + 9 * 10 - 13
= 3 + 90 - 13
= 80

#1673 - How Many Chicken Maths Problem

A farmer sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and a half chicken more.

Can you find out how many chicken were sold by the farmer on that day if we tell you that the fourth customer bought a single chicken ?

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A total of 15 chickens were sold by the farmer.

We know that the fourth customer bought just one from the total chickens. Thus, we can form the equation:
Total - (Total / 2 + 1/2) = 1
If you solve it, you will find that the total is 3.

Now, we can keep working this method till we reach the first customer.

The 1st customer bought 15 / 2 + 1/2 = 8 (leaving 7)
The 2nd customer bought 7 / 2 + 1/2 = 4 (leaving 3)
The 3rd customer bought 3 / 2 + 1/2 = 2 (leaving 1)
The 4th customer bought 1 / 2 + 1/2 = 1

When we add the numbers, we get
8 + 4 + 2 + 1 = 15.

#1674 - Algebra Rebus

Solve algebra rebus ?

Algebra Rebus
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To be or not to be

#1675 - Solve Who Am I Riddle

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

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Tree

#1676 - Logic Container Time Puzzle

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double it was.


In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled half?

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The answer is 9 hours.


Since we know that the water becomes double in the quantity every passing hour and that it was filled completely in ten hours, we need to go back one-step. Take out one hour and divide the quantity by 2.

#1677 - One Liner What Am I

The more it dries, the wetter it becomes. Can you tell what it is?

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Towel.

#1678 - The Imported Chocolate

Rohit went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got to know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100 ?

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83.33

#1679 - Woody Problem

Riddle me this, Riddle me that,
What am I? I am made of wood, but you cant saw me down?

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Sawdust

#1680 - Pun Delight

A bomb exploded in a room full of married couples and no one died.How ?

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There was not a single person in it. (Get it, single/unmarried?) Haha.