79+ Math Puzzles Questions With Answers And Explanation

Q:

Can you solve the Math Puzzle ?

solve_the_puzzle1499666934.jpg image

A) 12	B) 15
C) 17	D) 19

Answer & Explanation Answer: B) 15

Explanation:

The puzzle's logic is

1st figure : (9-7) + (8-5) = 2 + 3 = 5

2nd figure : (15-6) + (11-2) = 9 + 9 = 18

similarly, 3rd figure : (9-6) + (17-5) = 3 + 12 = 15.

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Q:

Guess the Missing number in the Number Challenge ?

A) 8	B) 32
C) 44	D) 64

Answer & Explanation Answer: D) 64

Explanation:

The logic in the challenge is

$\sqrt{81} x 6 = 9 x 6 = 54$

$\sqrt{144} x 7 = 84$

Similarly, $\sqrt{64} x 8 = 8 x 8 = 64$ .

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Q:

Crack this Logical thinking Math Puzzle?

logic_puzzle1533711581.jpg image

A) 9	B) 8
C) 7	D) 6

Answer & Explanation Answer: B) 8

Explanation:

Here by observing the figure,

we can complete the above incomplete cube with 2 cubes in 2 rows and 2 columns

=> 2 x 4 = 8.

Hence, with 8 small cubes we can complete the cube.

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Q:

Try this Brain Bashing Challenge ?

17426130_1248673081906460_4073935778689070051_n1500012638.jpg image

A) A to G : 2, 3, 7, 6, 5, 1, 4	B) A to G : 1, 4, 5, 6, 2, 7, 3
C) A to G : 5, 4, 7, 6, 3, 1, 2	D) None

Answer & Explanation Answer: A) A to G : 2, 3, 7, 6, 5, 1, 4

Explanation:

This can be done in two ways

1. A to G : 2, 3, 7, 6, 5, 1, 4

2. A to G : 4, 3, 7, 5, 6, 2, 1

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Q:

Solve the math puzzle given below?

math_puzzle1541075516.jpg image

A) 14	B) 10
C) 9	D) 8

Answer & Explanation Answer: B) 10

Explanation:

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Q:

Solve the following equations and find the value of abc?

A) 3	B) 6
C) 9	D) 12

Answer & Explanation Answer: B) 6

Explanation:

From the given equations,

$(a + b + c)^{2} = a^{2} + b^{2} + c^{2} + 2 (ab + bc + ca)$
${(6)}^{2} = 14 + 2 (ab + bc + ca)$
36 - 14 = 2(ab + bc + ca)
22/2 = ab + bc + ca
ab + bc + ca = 11

$a^{3} + b^{3} + c^{3} - 3 abc = (a + b + c) (a^{2} + b^{2} + c^{2} - ab - bc - ca)$
= (6) (14 - 11)
=(6)(3)
=18

Since, $a^{3} + b^{3} + c^{3} - 3 abc = 18$

36 - 3abc = 18

-3abc = 18 - 36

-3abc = -18

abc = 6.

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Q:

Riddle

How can you add eight 8's to get the number 1,000? (only use addition)

Answer

The key to this math riddle is realizing that the one place must be zero.
888 +88 +8 +8 +8 =1,000

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Q:

What 5 - digit number has the following features :

If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number?

Answer

Let the 5 digit number be represented by abcde.

Then the 6 digit number, 1abcde x 3 = abcde1 (another 6 digit number)

Now let Y = abcde

Then (100000 + Y) x 3 = (Y x 10) + 1

300000 + 3Y = 10Y + 1

7Y = 299999

Y = 299999 ÷ 7 = 42857

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