(1). Replace The Question Mark In The Picture
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Replace The Question Mark in the picture with the correct number.
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Answer & Explanation
Solution:
7
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(2). Number Trick Riddle
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Sonal asked the class to see if they could find the sum of the first 50 odd numbers. As everyone settled down to their addition, Lavesh ran to her and said, 'The sum is 2,500.' Ms. Sonal thought, 'Lucky guess,' and gave him the task of finding the sum of the first 75 odd numbers. Within 20 seconds, Lavesh was back with the correct answer
How does Lavesh find the sum so quickly and what is the answer ??
Answer & Explanation
Solution:
The following pattern holds: The sum is equal to n x n, when n is the number of consecutive odd numbers, starting with 1. For example, the sum of the first 3 odd numbers is equal to 3 x 3, or 9; the sum of the first 4 odd numbers is equal to 4 x 4, or 16; the sum of the first 5 odd numbers is equal to 5 x 5, or 25; and so on.
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(3). November Maths Puzzle
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The Puzzle: A girl, a boy, and a dog start walking down a road.
They start at the same time, from the same point, in the same direction.
The boy walks at 5 km/h, the girl at 6 km/h.
The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?
Answer & Explanation
Solution:
10km
Speed us 10km/h
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(4). Logical Number Problem
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According to number theory of mathematics , a perfect number is a positive integer that is equal to the sum of its positive divisors excluding the number itself.
For example :
6 => 1+2+3
28 =>1+2+4+7+14
I know one more number that is a perfect number and contains not more than 2 digits (i.e 496 won't be consider as it contains 3 digits).
Find the number ?
Answer & Explanation
Solution:
12=> 1+2+3+6
cannot be 1 (as number cannot be included)
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(5). Cool Maths Puzzle
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Divide 110 into two parts so that one will be 150 percent of the other. What are the 2 numbers?
Answer & Explanation
Solution:
44 and 66
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(6). Mathematics Puzzle
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Lavesh can paint a a house in just 3 hours.However it takes 6 hours for vishesh to complete the same job.
How long would it take for both to complete the same job?
Answer & Explanation
Solution:
two hours.
lavesh who could complete the job in 3 hours could complete 2/3 of the job in two hours. Vishesh who complete the job in 6 hours could complete 1/3 of the job in two hours.
2/3 + 1/3 = 1.
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(7). Easy Maths Puzzle
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Sadaf is selling fruits at brain teasers land.
She sell grapes at $30, Dates costs $25, and a Wolfberry costs $45
At what price does she sell fig ?
Answer & Explanation
Solution:
15
Cost of each alphabet is 5
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(8). Funny Logical Maths Puzzle
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If
1 = 5 ,
2 = 25 ,
3 = 325 ,
4 = 4325
Then 5 = ?
Answer & Explanation
Solution:
1
Already stated 1=5 =>5=1
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(9). Maths Algebra Puzzle
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Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.
* *
x *
=====
* * *
Answer & Explanation
Solution:
54
x3
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162
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(10). Number Riddle
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What number divided by 4 is the same as that number minus 4?
Answer & Explanation
Solution:
5 1'3
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