#681 - Smart Equation Problem

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

10
br>Equation 28 + 8 + 92 = 10 can be derived from
twenty eight(t) + eight(e) + ninetytwo (n) = ten => 10

Similarly for equation,
1 + 9 + 8
One (o) + nine (n) + eight (e) => one (1)

#682 - The Disappearing Mango Tree Riddle

There are many trees in my garden. One such tree is a mango tree and obviously, there are some mangoes on it. Using the Slingshot I try to get some mangoes. After half an hour there are no mangoes on trees and no mangoes with me.

How come ?

There are two mangoes on the tree. Using Slingshot I got one mango.
Therefore now one mango is with me and one mango is in the tree (note: we do not have mangoes (plural of mango).

#683 - Popular Horse Algebric Equation Problem

Can you solve the equation by finding the value ofA) HorseB) Cowboy bootC) Horseshoe

Popular Horse Algebric Equation Problem

Horse = 10, Cowboy-Boot = 1 ,HorseShoe= 2

= Step1 =
3Horse = 30
=> Horse = 10 .....(A)

= Step2 =
1Horse + 2HorseShoe + 2HorseShoe = 18
10 + 4HorseShoe =18
HorseShoe = 2 .....(C)

= Step3 =
2HorseShoe - 2Cowboy-Boot = 2
4 - 2Cowboy-Boot = 2
=> Cowboy-Boot = 1 ... (B)

= Step4 =
Cowboy-Boot+Horse*HorseShoe = 1+10*2 =>21

#684 - Fill In The Blanks Riddle

A _____ restaurant chef was _____ to made food as there was _____.

Can you solve the riddle by replacing blanks by a word (in three different ways) ?

notable
not-able
no-table.
Complete Sentence:
A notable restaurant chef was not able to made food as there was no table.

#685 - Hatty Potter Puzzle

Ponder upon a creature who exists in disguise
Who deals in mysteries and has nothing to tell you except lies
Now think about what is constantly the final thing to mend
What is the middle of the middle and the end of the end?
Now ponder upon the sound you must have often heard
When you were looking for the hard-to-find word
If you can tie them all together and answer this
Tell me what living creature you will always loath to kiss?

I am a Spider.

#686 - Easy Matchsticks Equation Riddle

You need to move one matchstick to make below equation correct.

Easy Matchsticks Equation Riddle

3+3=8 is not true. It can be set to 3+5=8 or 5+3=8 as shown in picture below.

#687 - Cake cutting Puzzle

You need to cut a round cake into eight equal pieces with just 3 cut. Can you do it?

Step 1 : You need to cut the cake from the middle point across the diameter.
Step 2 : Then you need to cut the cake horizontally and you will have 4equal pieces.
Step 3 : Then you need to cut the cake horizontally and you will have 8 equal pieces.

#688 - The Prime Number Riddle

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Except 2 and 3, all the prime numbers are in a form of (6k +1) or (6k -1)
Therefore, you can use the formula to write down the prime numbers as:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 61, 67, 71, 73

Now, you can separate numbers as per the requirement that are:
3, 11, 13, 23, 31, 41, 43, 53, 61, 71 and 73

#689 - Brick Optical Illusion Puzzle

This is a classy optical illusion puzzle.What more you can find except bricks in the image below?

Brick Optical Illusion Puzzle

A cigar stuck in the wall

#690 - Cyclic Unique Number Puzzle

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains same digits only.

Can you find that number ?

142857

142857 * 1 = 142857
142857 * 2 = 285714
142857 * 3 = 428571
142857 * 4 = 571428
142857 * 5 = 714285
142857 * 6 = 857142

These number are considered as cyclic numbers.