12 (21) 26
16 (30) 36
20 (38) 48
24 (54) 60
28 ( ? ) 84
Each numeral series stands on its own.
Their relationship is among the first/second/third numbers.
The relationship is the same for each numeral series.
But each numeral series does not affect each other.
2006-07-26 09:27:37 · 5 answers · asked by CL H 2 in Science & Mathematics ➔ Mathematics
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2006-07-29 03:46:46 · answer #1 · answered by Inquisitor-2006 5 · 2⤊ 0⤋
The notation is:
a (b) c
The relationship appears to be:
a + â
b = c
In your first 4 examples:
12 + â
(21) = 26
16 + â
(30) = 36
20 + â
(38?) = 48? [ somethings amiss here]
24 + â
(54) = 60
For the last relationship:
28 + â
(x) = 84
â
x = 56
x = 56 * 3/2
x = 84
So the missing number (?) should be 84.
2006-07-26 19:39:12 · answer #2 · answered by Puzzling 7 · 0⤊ 0⤋
I think it should be 84.. but check if the third series is 20 (42) 48
2006-07-26 16:35:43 · answer #3 · answered by anshul 3 · 0⤊ 0⤋
This makes sense to me only if in the third set we have (42) instead of (38), in that case (84) will be your (answer).
2006-07-26 18:02:13 · answer #4 · answered by Rick Blaine 2 · 0⤊ 0⤋
I think the 4th line should be "24 (45) 60". Then the ? Block would be 51..... does this make sense?
2006-07-26 16:46:10 · answer #5 · answered by M 4 · 0⤊ 0⤋