9000072702
Level:
B
The following numbers form an arithmetic sequence. Find
\(x\).
\[
10\, ,\ 20\, ,\ x
\]
\(x = 30\)
\(x = 40\)
\(x = -20\)
\(x = -10\)
B
9000076004
Level:
B
In the following list identify a set such that each element of this set is a divisor of
\(256\).
\(1,\ 128,\ 256\)
\(1,\ 64,\ 123\)
\(4,\ 8,\ 104\)
\(1,\ 12,\ 128\)
\(16,\ 30,\ 64\)
9000072704
Level:
B
We are given five consecutive terms of an arithmetic sequence. Find
\(x\).
\[
4\, ,\ a\, ,\ 8\, ,\ b\, ,\ x
\]
\(x = 12\)
\(x = 10\)
\(x = 14\)
\(x = 16\)
9000076005
Level:
B
In the following list identify a set such that each element of this set is a divisor of
\(1\: 260\).
\(1,\ 36,\ 42\)
\(4,\ 8,\ 630\)
\(12,\ 18,\ 26\)
\(16,\ 315,\ 1\: 260\)
\(1,\ 17,\ 256\)
9000072706
Level:
B
We are given five consecutive terms of an arithmetic sequence. Find
\(x\).
\[
5\, ,\ a\, ,\ b\, ,\ x\, ,\ 6
\]
\(x = 5.75\)
\(x = 5.5\)
\(x = 5.8\)
\(x = 5\frac{2}
{3}\)
9000072703
Level:
B
The following numbers form an arithmetic sequence. Find
\(x\).
\[
x\, ,\ 10\, ,\ 5
\]
\(x = 15\)
\(x = 20\)
\(x = 50\)
\(x = 5\)
9000073002
Level:
B
Consider a geometric sequence \((a_{n})_{n=1}^{\infty }\).
Let \(q\) be the quotient
and \(s_{n}\) be the sum
of the first \(n\)
terms. Given \(a_{6} = 5\)
and \(q = 1\),
find the sum of the first five terms of the sequence.
\(s_{5} = 25\)
\(s_{5} = 31\)
\(s_{5} = 6\)
\(s_{5} = 30\)
9000072705
Level:
B
We are given four consecutive terms of an arithmetic sequence. Find
\(x\).
\[
3\, ,\ a\, ,\ 0\, ,\ x
\]
\(x = -1.5\)
\(x = -3\)
\(x = 6\)
\(x = -6\)
9000072806
Level:
B
The following numbers form a geometric sequence. Find
\(x\).
\[
2\, ,\ 1\, ,\ a\, ,\ x
\]
\(\frac{1}
{4}\)
\(\frac{1}
{2}\)
\(-\frac{1}
{2}\)
\(- 1\)
9000070704
Level:
B
Differentiate the following function.
\[
f(x) = \frac{1}
{\cos x + 3x^{2}}
\]
\(f^{\prime}(x) = \frac{\sin x-6x}
{(3x^{2}+\cos x)^{2}} ,\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{6x-\sin x}
{(3x^{2}+\cos x)^{2}} ,\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{\sin x-6x}
{3x^{2}+\cos x},\ x\in \mathbb{R}\)
\(f^{\prime}(x) = \frac{6x-\sin x}
{3x^{2}+\cos x},\ x\in \mathbb{R}\)