Unit Test: Discrete Mathematics
Question and answers already passed
2026
The first term of an arithmetic sequence is −22−22. The common difference of the sequence is 5.
What is the sum of the first 30 terms of the sequence? - correct answer ✔1515
What is the value of this summation expression?
∑i=1 to 5 (2^i−5) - correct answer ✔37
What is the 5th term in the expansion of (½x³y²−4y)⁹ - correct answer ✔1008(x^15)(y^14)
What is the limit of this infinite series?
∑n=1 to ∞ (5n⁵/(4n⁵+5)) - correct answer ✔5/4
What is the 84th term of the arithmetic sequence?
−1286,−1269,−1252,−1235,−1218,... - correct answer ✔125
How is the sum expressed in sigma notation?
1/125+1/25+1/5+1+5 - correct answer ✔∑i=1 to 5 (5^(i−4))
The first term of a geometric sequence is −4300. The common ratio of the sequence is −0.1.
What is the 8th term of the sequence? - correct answer ✔0.00043
The nth term of a sequence is represented by (2n⁴−15)/(6n⁴+17)
Question and answers already passed
2026
The first term of an arithmetic sequence is −22−22. The common difference of the sequence is 5.
What is the sum of the first 30 terms of the sequence? - correct answer ✔1515
What is the value of this summation expression?
∑i=1 to 5 (2^i−5) - correct answer ✔37
What is the 5th term in the expansion of (½x³y²−4y)⁹ - correct answer ✔1008(x^15)(y^14)
What is the limit of this infinite series?
∑n=1 to ∞ (5n⁵/(4n⁵+5)) - correct answer ✔5/4
What is the 84th term of the arithmetic sequence?
−1286,−1269,−1252,−1235,−1218,... - correct answer ✔125
How is the sum expressed in sigma notation?
1/125+1/25+1/5+1+5 - correct answer ✔∑i=1 to 5 (5^(i−4))
The first term of a geometric sequence is −4300. The common ratio of the sequence is −0.1.
What is the 8th term of the sequence? - correct answer ✔0.00043
The nth term of a sequence is represented by (2n⁴−15)/(6n⁴+17)
