Special sequence

What if
   then 1×9=???

answer with solutions. .. ..

Correct answer:

x =  0

Step-by-step explanation:


Did you find an error or inaccuracy? Feel free to write us. Thank you!


You need to know the following knowledge to solve this word math problem:

Related math problems and questions:

  • Sequence
    arithmetic_seq In the arithmetic sequence is a1=-1, d=4. Which member is equal to the number 203?
  • AM of three numbers
    arithmet_seq The number 2010 can be written as the sum of 3 consecutive natural numbers. Determine the arithmetic mean of these numbers.
  • Progression
    sequence_geo -12, 60, -300,1500 need next 2 numbers of pattern
  • Big numbers
    numbers How many natural numbers less than 10 to the sixth can be written in numbers: a) 9.8.7 b) 9.8.0
  • Real estate
    house The residential house has three entrances numbered by odd numbers arithmetic progression. The sum of the two numbers on the corner entrances is 50. Calculate the highest of these three numbers.
  • Sequence
    Quadratic_equation In the arithmetic sequence is given: Sn=2304, d=2, an=95 Calculate a1 and n.
  • Finite arithmetic sequence
    seq_sum How many numbers should be inserted between the numbers 1 and 25 so that all numbers create a finite arithmetic sequence and that the sum of all members of this group is 117?
  • Probably member
    math_series Look at the series 2,6,25,96,285, ? What number should come next?
  • Sum and ratio
    eq1 The sum and ratio of two numbers is equal to 10. Which numbers are they?
  • Petra's test
    test The answer will be given 8 marks, and the wrong answer will be deducted 3 marks. The total number of marks obtained by the school is 36. If Petra answered six questions correctly,   how many questions were answered incorrectly by the student from the scho
  • Ten persons
    TUCWGKGHCVGBPEMEP75TVAR5LA Ten persons, each person makes a hand to each person. How many hands were given?
  • Consecutive numbers
    progression Sum of ten consecutive numbers is 105. Determine these numbers (write first and last).
  • Algebrogram
    plus Solve algebrogram: mama+anna=vari How many solutions are?
  • Sequence 11
    sequence_geo What is the nth term of this sequence 1, 1/2, 1/3, 1/4, 1/5?
  • The sum
    seq_sum The sum of the first 10 members of the arithmetic sequence is 120. What will be the sum if the difference is reduced by 2?
  • Find the sum
    arithmet_seq Find the sum of all natural numbers from 1 and 100, which are divisible by 2 or 5
  • We roll
    dices2 We roll two dice A. - what is the probability that the sum of the falling numbers is at most 4 B. - is at least 10 C. - is divisible by 5?