## Number Puzzle #169

IF,

9 = 100,

8 = 143,

7 = 162,

6 = 165,

Then,

5 = ?

IF,

9 = 100,

8 = 143,

7 = 162,

6 = 165,

Then,

5 = ?

If 1 + 2 = 13

2 + 3 = 61

3 + 4 = 193

Then 4 +5 = ?

Check your answer:-

**Number Puzzle #167**

What’s the missing number?

Can you find the missing number in the below triangle from the 4 options given in the image ?

Check your answer:-

Answer With Explanation**Explanation**: Its actually simple logic, generally we think to find out the relation between the opposite sides, but here the relation is in between adjacent numbers, which is very unusual though.

9 * 2 = 18 -1 = 17

160 *2 = 320 -1 = 319

475 * 2 = 950 – 1 = **949**

**4, 72, 652, ?**

Check your answer:-

Click here to See SolutionHide
answered by readers in comments

it is 2^2 => 4

3^3 => 27 => reverse 72

4^4 => 256 => reverse 652

thus the next number should be

5^5 => 3125 => reverse 5213

**Number Puzzle #163**

What next

2 , 2.5 , 3.33 , 4.25 , _ , _ ?

Check your answer:-

First Number

Second Number

Click here to See SolutionHide
here the series is

2+1/2

2+1/2

3+1/3

4+1/4

thus next numbers should be

5+1/5 and 6+1/6

Number Puzzle #162

10×11×12=9

11×12×13=9

12×13×14=9

13×14×15=9

14×16×20=?

Check your answer:-

Click here to See SolutionTo solve this, replace a n digit number by adding all digits, and solve, keep on repeating it until you get single digit.

10×11×12={(1+0)×(1+1)×(1+2)}^2 =6^2=36=3+6=9

11×12×13={(1+1)×(1+2)×(1+3)}^2 =24^2 =(2+4)^2=36=3+6=9

12×13×14={(1+2)×(1+3)×(1+4)}^2 =60^2 =(6+0)^2 =36 =3+6=9

13×14×15={(1+3)×(1+4)×(1+5)}^2 =120^2 =(1+2+0)^2 =9

14×16×20={(1+4)×(1+6)(2+0)}^2 =70^2 =(7+0)^2 =49 =4+9=13=1+3=4

Number Puzzle #161

If

2-1=3

4-4=0

8-5=40

10-10=???

Check your answer:-

here a-b=axa+(a/2)x(a/2)-axb

2-1=2×2+(2/2)x(2/2)-2×1=3

8-5=8×8+(8/2)x(8/2)-8×5=40

4-4=4×4+(4/2)x(4/2)-4×4=4

thus

10-10=10×10+(10/2)x(10/2)-10×10=25

Number Puzzle #160

Check your answer:-

Click here to See SolutionHideDifference of the numbers are following a patter

5 -3 => 2 (1*1*1+1)

33 -5 => 28 (3*3*3+1)

next difference should be (5*5*5 +1) => 126, so 33 + 126 => 159

503 -159 => 344 (7*7*7+1)

1233 -503 => 730 (9*9*9+1)

soln by our readers in comments.

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