Given the numbers sequence: 2, 8, 14, 20, 26, …
Which term is number 668?
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Anna wrote a sequence of numbers using the rule " subtract 8". The first two terms in her sequence were 2017 and 1999. Which number below is one term of Anna's sequence ?
a sequence of numbers is given as follow 1,3,5,7,….. find the 205th term
Lời giải:
Số thứ nhất: $1=2\times 1-1$
Số thứ hai: $3=2\times 2-1$
Số thứ ba: $5=2\times 3-1$.
..................
Số thứ 205: $2\times 205-1=409$
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Cách hai:
Gọi số thứ 205 của dãy là $x$. Dãy trên là dãy cách đều nhau 2 đơn vị nên:
$(x-1):2+1=205$
$(x-1):2=205-1=204$
$x-1=204\times 2=408$
$x=408+1=409$
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7 tháng 8 2021 lúc 20:13
Question 11. The first 6 numbers in a sequence are shown below.
2; 8; 14 ; 20; 26; 32;..
Find the difference between the 1000th number and the 997th number.
A. 6
B. 12
C. 16
D. 18
D nhé ta cso :[1000-997] *3 =18
d k cho mik di làm ơn
Question 11. The first 6 numbers in a sequence are shown below.2; 8; 14 ; 20; 26; 32;..Find the difference between the 1000th number and the 997th number.A. 6
B. 12
C. 16
D. 18
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Find the 100th term of the number sequence:1;5;9;13;17;...
Which term is number 497 ?
Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people?
Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits?
Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number?
Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book?
Câu 5...
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Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people?
Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits?
Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number?
Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book?
Câu 5 : Find A, if A is 3 less than the average of 48; 55; 29 and A. The value of A is…
Câu 6 : The sum of denominator and numerator of a fraction is 121 and the fraction is equal to 4/7. Find the denominator of the fraction?
Câu 7 : The sum of two numbers is equal to 77. If the first number is multiplied by 8 and the second by 6, the two product are equal. The larger of these numbers is…
Câu 8 : Which is the greatest 2 - digit number divisible by 2, 3 and 4?
Câu 9 : Calculate: (1 + 2/5) x 6/7.
Câu 10 : Give the number sequence: 1, 4, 7, 10, 13, … Find the 15th term of the number sequence.
câu 1:16 ; câu 2 : ai mà biết được
In a number sequence : 1 , 1 , 2, 3 , 5 , 8 , 13 , 21 , ... , starting from the third number , each number is the sum of the two numbers that come just before it . How many even numbers are there among the first 1000 numbers in the number sequence ?
An infinite sequence of numbers 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, … follows the
pattern such that starting from the third number, each number is equal to the units
digit of the sum of the two numbers in the sequence immediately preceding it.
What is the 2019th number of the sequence?
đề bài là gì vậy
Một dãy vô hạn các số 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, ... theo sau bài toán sao cho bắt đầu từ số thứ ba, mỗi số bằng hàng đơn vị của tổng của hai số trong dãy liền trước nó. Số thứ 2019 của dãy là bao nhiêu? =)
anna wrote a sequence of numbers using the rule subtract 8 . The first two tenns in her senquence were 2017 and 1999 which number below is one tern of anna is senquence
anna đã viết một chuỗi các con số sử dụng quy tắc trừ 8. Hai tenns đầu tiên trong senquence của cô là năm 2017 và 1999 mà số dưới đây là một tern của anna là senquence
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In a number sequence: 1,1,2,3,5,8,13,21,..., starting from the third number, each number is the sum of the two numbers that come just before it. How many even numbers are there among the first 1000 numbers in the number sequence?
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