IF 1+2 = 3
3 + 4 = 21
5 + 6 = 55
Then 4 + 5 = ?
Answer is 36
Explanation:
1 + 2 => (1)^2 + (1*2) = 3
3 + 4 => (3)^2 + (3*4) = 21
5 + 6 => (5)^2 + (5*6) = 55
Thus 4 + 5 => (4)^2 + (4*5) = 36
Number Puzzle #28
Number Puzzle #27
13, 25, ?
16, 28, 35
19, 31, 28
What is the missing number.
Answer is 32
How?
If you see the rows every next number = previous number in the row +3.
Number Puzzle #26
Find the missing number
This puzzle is courtesy 
, shared on puzzlersworld facebook page.
See Answer
Answer is 2
How?
7*6 = 4 2
9*9 = 8 1
5*3 = 1 5
6*2 = 1 2
Number Puzzle #25
Whats the missing number in the triangle
Answer is 125
Number Puzzle #24
number puzzle 24
Answer is 90.
How?
Number on the bigger line is the multiplication of the numbers on the adjacent smaller lines, thus the answer should be 10*9=90.
Number Puzzle #23
Find the missing number
Answer is 36
How?
Actually number on the right side is the square of the exact opposite number.
thus the missing number should be 6^2.
Number Puzzle #22
Find the missing number
Answer is 10
How?
There is gap of 4 between numbers
8+4 = 12
3+4 = 7
9-5 = 4
simillarly
?-4 = 6=> ?=10
NOTE: there is a better and shorter explanation(suggested by Guestlogic in comment), opposite numbers sum is 15, that’s why answer should be 15 – 5 = 10
Number Puzzle #21
number puzzle 21
Answer is 14
Number Puzzle #20
number puzzle 20
Answer is 15
Explanation: Numbers in outer circle are multiplication of the corresponding number in inner circle and 3.
Number Puzzle #19
Answer if you can
? , 13, 49
9, 17, 69
13,11, 59
Check your answer:-
See AnswerAnswer courtesy Sandy, in disqus comments
Logic: For every row First column*2 + Second Column*3 = Third Column
for second row 9*2 + 17*3 = 69
for third row 13*2 + 11*3 = 59
for first row, lets say first column value is x, thus
x*2 + 13*3 = 49
2x = 49 – 39 = 10
x = 5
