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Summative Test Q1S1

Quiz by Arzakem Aldrin

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20 questions
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  • Q1

    1.    Which of the following DOES NOT involve a sequence?

    The teacher writes 5 random numbers on the board with no

    pattern involved

    a, a + b, a + 2b, a + 3b, a + 4b, …

    Daily countdown to Christmas Day starting with 100 days

    The student recites the odd numbers from 1 to 10 in order

    60s
  • Q2

    2.      What rule defines the sequence 1, 4, 9, 16, … ?

    2n

    n + 2

    n2

    2n

    120s
  • Q3

    3.      What is the next term of the sequence: Bc, Ef, Hi, Kl, ____

    Mn

    No

    Op

    mN

    120s
  • Q4

    4.      Which of the following is an arithmetic sequence?

    1, 2, 3, 5, 8, 13, …

    5, -5, 5, -5, …

    2, 4, 8, 16, …

    3, 1, -1, -3, …

    60s
  • Q5

    5.  How is the common difference determined in the

    arithmetic sequence: -7, -4, -1, 2, 5,…?

    2 – 1

    5 – 2

    – 7 – – 4

    2 - 5

    45s
  • Q6

    6.      In an arithmetic sequence whose a10 = 15 and a5 = 10,

    determine the common difference.

    -1

    1

    -5

    5

    300s
  • Q7

    7. Which is the nth term formula of an arithmetic sequence?

    an = a1+ d(n – 1)

    dn = nk - n 

    an = a2– a1

    an = a1–  d(n + 1)

    120s
  • Q8

    How do you determine the arithmetic mean of 15, ____, 40?

    (15+40)/2

    15+40

    15x40

    40-15

    120s
  • Q9

    9.  Which term in the arithmetic sequence 6, 13, 20, 27, … is 104?

    17th

    15th

    16th 

    14th

    300s
  • Q10

    10.  After one second, a rocket is 30 ft above the ground. After another second, it is 85 feet above the ground. Then after another second, it is already 140 feet above the ground. If it continues to rise at this rate, how many feet above the ground will the rocket be after 10 seconds?

    525 feet

    470 feet

    855 feet

    580 feet

    300s
  • Q11

    11. It refers to the sum of the terms of an arithmetic sequence.

    common difference

    nth term

    arithmetic mean

    arithmetic series

    45s
  • Q12

    12.      If the last term is given in an arithmetic sequence, which formula is BEST to use to get the arithmetic series?

    Answer Image
    Answer Image
    Answer Image
    Answer Image
    120s
  • Q13

    13.      Find the sum of the first 25 terms of the arithmetic sequence: 15, 22, 29, 36, … ?

    2665

    183

    2475

    1387.5

    300s
  • Q14

    14.      This refers to the number that is being multiplied to the preceding terms of a geometric sequence in order to obtain the next term in the sequence.

    Common ratio

    Common Difference

    Constant

    Ratio

    45s
  • Q15

    15.  The Dream Gym has 30 rows. Each successive row contains one additional seat. If the first row has 30 seats, how many seats are there in the gym?

    Carlo used an=a1+d(n-1)  while  Karla used Sn=n[2a1+d(n-1)]/2 to answer the question. Who used the correct formula?

    Carlo

    Both of them are correct

    Karla

    None of them is correct

    120s

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