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What number is after 81 in the pattern 1 9 9 81 81 if the pattern is by 9's and 1's?
Wiki User
∙ 9y ago
There are at least three possible answers, consistent with the information given in the question. Short of reading the mind of the person who posed the question, there is no way of determining which of these (or other) solutions is the "correct" one.
Answer A: It is 81.
The sequence is 1 followed by 2 lots of 9^1, then 3 lots of n^2, then 4 lots of n^3, etc.
Answer B: It is 729.
The sequence is 1 followed by pairs of powers of n.
Answer C: It is 6561.
The sequence is 1 followed by a pair of 9s, followed by a pair of 9^2, followed by a pair of (9^2)^2, then ((9^2)^2)^2, etc.
Wiki User
∙ 9y ago
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What is the pattern of 9s?
as in the multiples? 9 18 27 36 45 54 63 72 81 90 99 ...
How do you write 0.81 repeating as a fraction in simplest form?
Write the repeating digits over the same number of 9s and simplify: 0.81... has two repeating digits ⇒ the denominator has two 9s, ie 99. ⇒ 0.81... = 81/99 = 9/11
How many 9s go in 81?
9 of them.
How five 9s equal to 100?
9^2+9+9 +9/9 81+9+9+1=100
What is the largest number that can be rounded to 700?
749.99999 (any number of 9s after the decimal point)
What is the next number in the 9s pattern?
It is 99.
What is the pattern in the 9s multiplication facts?
The pattern is: 9, 18, 27, 36, 45, 54, 63, 72, 81, and 108.
How many 9s in 81?
Nine of them
What times table is 27 in?
It's in the tables of 1s, 3s, 9s, and 27s .
What is the pattern of 9s?
as in the multiples? 9 18 27 36 45 54 63 72 81 90 99 ...
How do you write 0.81 repeating as a fraction in simplest form?
Write the repeating digits over the same number of 9s and simplify: 0.81... has two repeating digits ⇒ the denominator has two 9s, ie 99. ⇒ 0.81... = 81/99 = 9/11
How many 9s go in 81?
9 of them.
How do you make 8 from four 9s?
9*9=81 81-9=72 72/9=88
How many nanoseconds are in second?
1 ns (nanosecond) = 10-9s 1s / 10-9s = 109 109 = 1000 000 000 1 second = 1000 000 000 ns (nanosecond)
Why is 2421 is called self complementary?
9's complement of a decimal number represented in 2421 code is easily obtained by replacing the 1s with 0s,and 0s with 1s,so 2421 code is called a self complementing code.example-2421 of '2' is '0010',after replacing the 0s with 1s and 1s with 0s weget '1101' which is the 2421 of '7'(9s complement of 2 is 7). Thus 2421 code is self complementary.
Is -0.436558509... rational number?
The answer depends on what the ellipses represent. If it is repeating 9s then it is. If it means that the string of digits goes on but with no repeating pattern then it is not.
Express the number ten with nine 9s?
9.99999999
