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If 817=7, 909=9,453=3, then 1246 = ?

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Number Puzzle #154

817-7-909-9-453-3-1246-?

Reply as fast as you can
If 817 = 7
909 = 9
453 = 3
Then what is 1246 = ?

Check your answer:-

Tried enough already?
Click here to See Solution
its the sum of all digits in the number till you get single digit
so 1+2+4+6 => 13 => 4

This puzzle is courtesy pranav, shared on whatsapp

Which number is greater ?

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which number is greater
which number is greater ?
99^999 + 1 99^1000 +1
———— OR ———–
99^1000 + 1 99^1001 + 1

Check your answer:-

Tried enough already?
Click here to See Solution
Lets do A – B, ie.

99^999 + 1 99^1000 +1
A – B = ———— – ———–
99^1000 + 1 99^1001 + 1

=> (99^1001 + 1)*(99^999 +1) – (99^1000 + 1 )*(99^1000 +1)
——————————————————–
(99^1000 + 1 ) * (99^1001 + 1)

Now here we just need to see if the value of the numerator is +v or -ve

lets expand the numerator
99^2000 + 99^1001 + 99^999 + 1 – (99^2000 + 99^1000 + 99^1000 + 1)

=> 99^1001 + 99^999 – 2*99^1000
=> 99^999 ( 99^2 + 1 – 2*99)
clearly it is +ve as 99^2 is much greater than 2*99

thus A is greater than B.

Which number should replace ? mark

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Let’s see your math quotient

can you tell which number should replace the question mark ?
which number should replace ? mark


Check your answer:-

Tried enough already?
Click here to See Solution
The Answer is 144.
1. (5-5)*2=0 and 0*0=0
2. (11-8)*2=6 and 6*6=36
3. (7-3)*2=8 and 8*8=64 and so
4. (8-2)*2=12 and 12*12=144

soln by Rajaram C Sah

What happened to the missing ten dollars?

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Three tourists sought lodging in a small American hotel. The Receptionist
Offered them a three-room suite for $300. The three men went upstairs
With the Hotel Attendant to have a look at the suite. Everything seemed fine, and
Each tourist gave $100 to the Hotel Attendant. When the Receptionist received the
$300 from the Hotel Attendant, he discovered that he had made a mistake: the
Price of the suite was only $250. Therefore, he sent the Hotel Attendant back
With five $10 bills. On his way upstairs, the Hotel Attendant realized it would
Be a problem to distribute the five $10 bills among three people. So he
Slipped two of the $10 bills into his own pocket, and gave back $10 to
Each of the three men. Thus, they had each paid $90, which adds up
to $270. Twenty dollars ended up in the Hotel Attendant’s pocket. Altogether,
That makes $270 + $20 = $290, even though the three guests had originally
Paid $300.
What happened to the missing ten dollars?

Click here to See Answer
Actually we are comparing apples to oranges

it should have been
$270 (which they gave) + $30 (which they have) = $300(original money)

OR if you think other way

$250(with hotel) + $20(with waiter) + $30(with tourists) = $300(original money)

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