Find the missing number x in the following number sequence:

2, 9, 18, x, 57, 114, 121

Find the missing number in the following number sequence : 2 ; 2 ; 3 ; 5 ; 14 ; ... ; 965

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 ?

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?

What is the next number in the sequence *

2 điểm

A 700

B 550

C 600

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 ?

 Find the missing number in the following number sequence : 1 ; 4 ; 10 ; 22 ; 46 ; ... ; 190

What is the next number in the sequence: 1, 5, 17, 53, 161, ... ?

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