? , 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
14, 10, 8
9, 16, 7
10, ?, 9
How?
Actually the sum of the first two rows is 32
so the missing number should be 32-10-9=13.
Find the missing section
IF 11 = 20
12 = 31
13 = 42
14 = 53
Then 18 = ?
Answer is 97.
How?
11 => (1+1)(1-1) => 20
12 => (2+1)(2-1) => 31
13 => (3+1)(3-1) => 42
14 => (4+1)(4-1) => 53
similarly
18 => (8+1)(8-1) => 97
IF 5 + 3 = 28
9 + 1 = 810
8 + 6 = 214
5 + 4 = 19
then 7 + 3 = ???
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
IF
2 + 3 = 10
8 + 4 = 96
7 + 2 = 63
6 + 5 = 66
then 9 + 3 = ?
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
IF
1 = 3
2 = 3
3 = 5
4 = 4
5 = 4
then 6 = ?
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
64 5 40
81 7 65
16 4 ?
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.
6 3 2
-3 ? 5
———-
2 6 7
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.
1 2 3
2 4 6
3 6 ?
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.
