#### • Class 11 Physics Demo

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# 5 Math Puzzles

Math Puzzle:
Math Puzzles are easy and fun learning topic. Children are advised to practice puzzles with their own intersect which improves their skill level. By making use of basic math operators the puzzles can be solved.

1. what will be the next sequence of the number 8,23,68,203,----,-----

Solution: The sequence is formed by multiplying first (previous) term by 3 and subtracting by 1.
First term = 3
Second term = ( First term) x 3 – 1  = 3 x 3 - 1 = 8
Third term =  ( Previous term) x 3 – 1  = 8 x 3 - 1 = 23
Fourth term = ( Previous term) x 3 – 1  = 23 x 3 - 1 =68
Fifth term = ( Previous term) x 3 – 1  = 68 x 3 - 1 =203
Sixth term = ( Previous term) x 3 – 1  = 203 x 3 - 1 =608
Seventh term = ( Previous term) x 3 – 1  = 608 x 3 -1 =1823
The next sequence of the term is 8,23,68,203,$\underline{608,1823}$

2. Find the Missing number

Solution: The missing number is 72 = 49

3. How many square are their in the figure

Solution: 16 squares

4. Find the series of the number:
12,14,18,26,42,---

Solution: The number is 74.
The numbers are added  by 2, 4, 8 ,16, 32

5. What is the next number   1,3,2,5,6,4,8,9,__

Solution: The numbers values are given on alphabetical position
ABCDEFGHI = 1,2,3,4,5,6,7,8,
the number is 7.

Math Puzzle for Class 5 :

1. find the series of the term 32,33,43,44,_,_
2. Find the missing number

3. Find the number of circle in the given figure

4. Find the number  24, 30, 42,60, 84, 11 ,___

5. Complete the diagram

6. Find the numbers:

7. Fill in the box with 1 to 9 numbers, so that every row, column and diagonal adds upto 15.