7,16,44,129,385,? find the next number
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Answer:
71,64,41,29,386
there you go
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1157 is the next number in the series
7,16,44,129,385, 1157
Step-by-step explanation:
Given:
7,16,44,129,385,?
To find:
The next number in the series
Solution:
- This series is a numerical sequence in which the numbers are arranged in an orderly manner makes a sequence.
- The pattern is (x₁,x₂,x₃,x₄,x₅,x₆) are the numbers in the series thus x₁, (x₁×2)-5⇒x₂, (x₂×2)-4⇒x₃, (x₃×2)-3⇒x₄, (x₄×2)-2⇒x₅, (x₅×2)-1⇒x₆.
- The pattern of this series is the first number is multiplied by 2 and subtracted by 5. Thus we get 9, so add the first number and 9 makes the 16-second number.
- 7 ⇒16
⇒(7×2)-5
⇒(14-5)=9
⇒7+9=16
- The second number 16 is multiplied by 2 and subtracted from 4. Thus we get 28, add the second number 16 with 28 we get 44 the third number.
16⇒44
⇒(16×2)-4
⇒32-4=28
⇒16+28=44
- The third number 44 is multiplied by 2 and subtracted from 3. Thus we get 85, add the third number with 85 we get 129 the fourth number.
44⇒129
⇒(44×2)-3
⇒(88-3)=85
⇒44+85
⇒129
- The fourth number 129 is multiplied by 2 and subtracted from 2. Thus we get 256, add the fourth number with 256 we get 385 the fifth number.
129⇒385
⇒(129×2)-2
⇒258-2=256
⇒256+129
⇒386
- The fifth number 385 is multiplied by 2 and subtracted from 1. Thus we get 771, add the fifth number with 771 we get 1157 the sixth number.
- The next number in the series is
386⇒(386×2)-1
⇒772-1=771
⇒386+771
⇒1157
Hence,
The next number in the series is 1157.
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