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Number Puzzle #187

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Number Puzzle #187

0 3 14 2 1 : 2 10 24 6 8 : 4 14 ? 5 6

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Answer is 71

as numbers add upto a multiple of 10 in every atom.

ex. 0 + 3 + 14 + 2 +1 =20
2 + 10 + 24 + 6 + 8 = 50
only option which can make the sum to a multiple of 10 for 4 + 14 + 5 + 6 is 71.

answered by Ram Balaji in disqus comments

Number Puzzle #184

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What number should replace the question mark?

Math vaibhav rvm

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Answer With Explanation
Its actually pretty simple

all the rows sum is 15

first row => 9 + 1 + 5 => 15
second row => 4 + 8 + 3 => 15
third row => 2 + ? + 7 => 15 => ? = 15 – 7 -2 => 6

Math Puzzle – fill the boxes

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Solve this one in a minute

fill in the boxes
Plz answer this

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Box 1 (top left)

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Box 2 (top right)

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Box 3 (bottom left)

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Box 4 (top right)

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Let’s quickly write the equations

B1 + B2 = 14

B1 + B3 = 15

B2 + B4 = 16

B3 – B4 = 10

by adding all equations

B1 + B2 + B3 = (14 + 15 + 16 + 10 )/2 = 55/2 = 27.5

B3 = 27.5 – (B1 + B2) = 27.5 – 14 = 13.5 => B3 = 13.5

B2 = 27.5 – (B1 +B3) = 27.5 – 15 = 12.5 => B2 = 12.5

B1 = 14 – B2 = 14 – 12.5 = 1.5 => B1 = 1.5

B4 = B3 – 10 = 13.5 – 10 = 3.5 => B4 = 3.5

 

Find the hieght of table with Cat and tortoise

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Let’s see if you can solve this one.
What is the heigh of the table in cm?

height of the table, cat and tortoise


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let’s assume height of the table is T and cat is C and R of tortoise.

let’s write down the equations

T + C – R = 170cm

T + R – C =  130cm

add both the equations

2T + C – R + R -C = 170 + 130 cm

2T = 300cm

T = 150cm

Find the Pin

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Five Clues

  1. 7 2 5: 1 number is correct and placed in the wrong spot
  2. 3 1 7: 2 numbers are correct and placed in the wrong spot
  3. 7 9 3: 1 number is correct and placed in the proper spot
  4. 8 4 9: nothing is correct.
  5. 8 9 1: 1 number is correct and placed in the wrong spot.

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Answer With Explanation

from clue 3 and 4 -> 1 number can be 7 OR 3 (since 9 is not correct). Now if 7 was correct and placed in proper spot, it conflicts with Clue 1, thus 7 can’t be the correct number and the correct number is 3 and placed at proper spot (which is 3rd spot).

Now from 2nd clue -> two numbers are correct, one is 3 and other one should be 1 (as we know 7 can’t be correct number), since 1 is placed at wrong spot, correct spot for 1 should be first (since 3rd spot is for 3).

Again from Clue 1: 1 number is correct and placed at wrong spot. we are looking for a number at 2nd spot, it should be 5 (as 7 is not in picture and it can’t be 2 since it is placed at 2nd spot), 5 is placed at wrong spot, its correct spot should be 2nd, since we already know 1st and 3rd spot numbers.

Thus the PIN is 153.

 

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