anonymous
  • anonymous
Select next number in series: 298 209 129 58 4 (My answer is a. -13 b. -93 c. -66 d. -57
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Hi AS, pls check again and inform if the last number in the series is 4 or -4 ???
anonymous
  • anonymous
last number is 4. thank you
anonymous
  • anonymous
the differences are 298 (89) 209 (80) 129 (71) 58 (54) 4, but i can't find a pattern there.

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anonymous
  • anonymous
That is why I asked if the last number was -4 or not
anonymous
  • anonymous
My original answer was -13. But then my friend came up with -66. Think -66 is correct as the spread is 9
anonymous
  • anonymous
If it is -4 then it works out Each time the number being subtracted decreases by 9
anonymous
  • anonymous
So 58 - 62 = -4 and -4 - 53 = -57
anonymous
  • anonymous
That looks right on everything, but for the fact that the last number of the actual sequence doesn't fit.
anonymous
  • anonymous
AS, how did yr friend land up with -66?? what's the working??
anonymous
  • anonymous
For all u know, it might be a typo!!
anonymous
  • anonymous
exactly, twice though? i doubt that.
anonymous
  • anonymous
Not from AS, it might be a typo in the printed paper he got
anonymous
  • anonymous
Harkirat. Went back to the math problem. You are very sharp. The last number is a -4. So sorry. Does it make better sense now.
anonymous
  • anonymous
Sure does :)
anonymous
  • anonymous
Do I get two medals for that????
anonymous
  • anonymous
Yes, I gave you the medals...very well deserved. So what is your final answer? Like i said, originally I had -13 but got lost somewhere
anonymous
  • anonymous
Final answer is -57
anonymous
  • anonymous
Harkirat: Please explain -57. the differences are 298 (89) 209 (80) 129 (71) 58 (54) -4,
anonymous
  • anonymous
theres a change, because the final is -4, it is 62, not 54, so the difference decreases by 9 between each set, therefore the next one is 62-9=53, so -4-53=-57
anonymous
  • anonymous
See, it goes like this 298 - 89 = 209 209 - 80 = 129 129 - 71 = 58 58 - 62 = -4 -4 -53 = -57 Got it now??
anonymous
  • anonymous
Thank you so much. Yes, I see it now. You both Harkirat & buksbelly are very, very, sharp. Enjoy the rest of your evening. It's after 1:00 am., in California. Goodnight
anonymous
  • anonymous
Bonne nuit!
anonymous
  • anonymous
Shubh Ratri (Good Night in Hindi )

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