The number which best completes the sequence below is:
20 5 30 6 42 7 ?
56
48
49
53
63
I didn't understand could you help me
2007-01-12 07:53:19 · 6 answers · asked by diamond 1 in Science & Mathematics ➔ Mathematics
56.
Divide first 20 by 4 - get 5. multiply by 6, get 30.
Divide by 5 get 6, multiply by 7, get 42.
Divide by 6, get 7. mulitply by 8 --- get 56.
2007-01-12 07:58:31 · answer #1 · answered by awayforabit 5 · 1⤊ 0⤋
the answer would be 56... because you are adding the numbers this way 20 + 5 = 25 +5 = 30..... THEN 30 +6=36+6=42.... THEN 42+7=49+7=56... so the answer you get is 56.>?? my thought process works that way.>?? lol
2007-01-12 08:06:08 · answer #2 · answered by zzane2626 1 · 0⤊ 0⤋
You have 5 , 6, 7 so logical is 8
20 = 5 * (5-1)
30 = 6 * (6 -1)
42 = 7 * (7-1)
so next is 8*7 = 56
So, bext two numbers are 56 and 8.
2007-01-12 08:01:42 · answer #3 · answered by Robert W 4 · 0⤊ 0⤋
20 divided by 4 = 5
5 times 6 = 30
30 divided by 5 = 6
6 times 7 = 42
42 divided by 6 = 7
...7 times 8 = 56
2007-01-12 07:59:44 · answer #4 · answered by John C 4 · 0⤊ 0⤋
48
2007-01-12 08:04:52 · answer #5 · answered by CelticMoonGoddess 2 · 0⤊ 0⤋
56
Because 4x5=20 5x6=30 6x7=42 7x8=56
At least that's how I figured it out.
2007-01-12 08:04:04 · answer #6 · answered by Julie F 2 · 0⤊ 0⤋