Question

What is the next number in the sequence number 9,12,7,105?

Answer 1

Answer:

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Answer 2

Answer:

hope it will help you

9,12,, 7, 105, 89, 637, …

1st number x 2nd number. Add or subtract the same numbers if you add to get to the number then subtract it from the total and vice versa, Continue moving to the right to extend the series….

9 plus 3 is 12; difference plus 3

9 x 12 = 108 deduct the plus 3 = 105

9, 12, 7, 105,

12 x 7 = 84; 12 to 7 is -5 less, thus add 5

84 + 5 = 89

9, 12, 7, 89,

7 x 105 = 735; 7 to 105 has a difference of plus 98, thus deduct -98

735 -98 =637

9, 12, 7, 105, 89, 637…