1.Which of the following is an arithmetic sequence?
A.4,7,10,15
B.7,13,19,23
C.5,9,13,17
D.5,10,15,25
2.What is the next term in the sequence 20,16,12,8,4...?
A.0
B.-4
C.1
D.-1
3.What is the sum of first 18 terms in the sequence 3,7,11,15?
A.101
B.666
C.882
D.828
4.What is the sum of the arithmetic sequence whose first term is -3 and d=4?
A.228
B.80
C.300
D.56
5.For the arithmetic sequence 16,14,12,10... find the common difference.
A.2
B.-2
C.4
D.-4
A.4,7,10,15
B.7,13,19,23
C.5,9,13,17
D.5,10,15,25
2.What is the next term in the sequence 20,16,12,8,4...?
A.0
B.-4
C.1
D.-1
3.What is the sum of first 18 terms in the sequence 3,7,11,15?
A.101
B.666
C.882
D.828
4.What is the sum of the arithmetic sequence whose first term is -3 and d=4?
A.228
B.80
C.300
D.56
5.For the arithmetic sequence 16,14,12,10... find the common difference.
A.2
B.-2
C.4
D.-4
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Answer:
1. C
It is the only option that has common difference.
2. A
The common difference of the sequence is -4. So 4-4=0
3. B
4. A
-3+1+5+9+13+17=42
42+21+25+29+33=150
150+37+41=228
5. B
14-16=12-14=10-12= -2
A.44
B.46
C.48
D.50
2.Find the sum of multiples of 4 from 10 to 45.
A.250
B.252
C.254
D.256
3.Find the 26th term of the sequence-16,-13,-10,-7.
A.29
B.39
C.49
D.59
4.What is the ratio of 2months to 1 year?
A.2 is to 1
B.1/6
C.2/10
D.2/11
5. what is the 6th term of a geometric sequence whose first term is -4 on the common ratio is -3?
A 3 is to 4
B.3 is to 7
C.4 si to 7
D.4 is to 5