IF 5 + 3 = 28
9 + 1 = 810
8 + 6 = 214
5 + 4 = 19
then 7 + 3 = ???
Answer with Explanation
Answer is 410.
How?
5 + 3 = (5-3)(5+3) = 28
9 + 1 = (9-1)(9+1) = 810
8 + 6 = (8-6)(8+6) = 214
similarly
7 + 3 = (7-3)(7+3) = 410
Number Puzzle #15
Number Puzzle #14
IF
2 + 3 = 10
8 + 4 = 96
7 + 2 = 63
6 + 5 = 66
then 9 + 3 = ?
Answer with Explanation
Answer is 108.
How?
2 + 3 = 2 *(2+3) = 10
8 + 4 = 8*(8+4) = 96
7 + 2 = 7*(7+2) = 63
6 + 5 = 6*(6+5) = 66
9 + 3 = 9*(9+3) = 108
Number Puzzle #13
IF
1 = 3
2 = 3
3 = 5
4 = 4
5 = 4
then 6 = ?
Answer with Explanation
Answer is 3.
How?
It simple, but you have to think more then the math 🙂
1 = one = 3 letters
2 = two = 3 letters
3 = three = 5 letters
4 = four = 4 letters
5 = five = 4 letters
6 = six = 3 letters
Number Puzzle #12
64 5 40
81 7 65
16 4 ?
Answer with Explanation
Answer is 16.
How?
Its a little trickier one then others.
sqr root(64) * 5 = 40
sqr root(81) * 7 = 63
sqr root(16) * 4 = ? = 16.
Number Puzzle #11
6 3 2
-3 ? 5
———-
2 6 7
Answer with Explanation
Answer is 6.
How?
It is the simple subtraction as we used to do in our early maths classes in our childhood, so just reminds us of those days of taking carry and subtracting.
Number Puzzle #10
1 2 3
2 4 6
3 6 ?
Answer with Explanation
Answer is 9.
How?
Here, every element in second row = corresponding column element in first row * 2.
Similarly every element in third row = corresponding column element in first row * 3.
Number Puzzle #9
50
20 40
90
30 10
?
Answer with Explanation
Answer is 30.
How?
Sum of the numbers on vertices of a triangle should be 90, i.e. 20 + 40 + ? = 90 => ? = 30.
Number Puzzle #8
4
6 2
9 3 1
19 10 7 ?
Answer with Explanation
Answer is 6.
How?
Here, Number in a block is sum of the number on the top and right block so 7 = 1 + ?, hence ? should be 6.
Number Puzzle #7
Find the missing number
1 ? 12 11
6 7 14 13
8 5 10 15
4 2 9 3
Answer with Explanation
Answer is 0 OR 16.
How?
Here, there is no special pattern except that they are continuous numbers which are jumbled up, so the missing number can either be 0 or 16.
Number Puzzle #6
5 13 8 # 11 11 # 6 ? 3
Answer with Explanation
Answer is 9.
How?
Here, every middle element is the sum of the other two so answer should be 6+3 = 9.
