Elimination round

What is the next number in the given sequence 1, 4, 9, 16, ___?

• 24

• 25

• 35

• 36

Find the common difference in the arithmetic sequence 23, 19, 15, 11?

• 4

• 5

• -4

• -5

What is the next term in the sequence 8, 16, 32, 64…?

• 68

• 96

• 100

• 128

A polynomial in the third degree is called __________.

• binomial

• trinomial

• quadratic

• cubic

What is the arithmetic mean between 15 and 35?

• 20

• 25

• 30

• 35

What are the roots of

 $f(x)=(x+1)(x-2)(2x-1)?$  

• {1, -2, -1}

• {-1, 2, 1}

• {1, -2, -½}

• {-1, 2, ½}

Find the positive geometric mean between 3 and 75?

• 15

• 39

• 78

• 225

What is the 11^th term of the arithmetic sequence -2, 4, 10, 16, …?

• 52

• 58

• 64

• 70

What is the sum of the geometric sequence 3, 6, 12, 24, 48?

• 92

• 93

• 94

• 95

What is the sum of the first 15 counting numbers?

• 100

• 110

• 120

• 130