Terms of Sequence
The 6th term of the sequence 1,4,7,10
What is 16
Write the rule for the sequence 5,7,9,11
an = 2n + 3
The sum from n = 1 to 4 of n
What is 10
A letter is chosen from the word EXTRATERRESTRIAL. Find the probability that the letter T is chosen.
What is 3/16
Eight horses are entered in a race. How many different orders are possible for completing the race?
What is 40320
The seventh term in the sequence 5,-25, 125, -625
What is 78,125
Write the rule for 1, 1/4, 1/9, 1/16
an = 1/n2
The sum from k = 1 to 3 of 1/k
What is 1 5/6 or 11/6
A coin is tossed twice. What is the probability both coins show heads?
What is 1/4
A company's employee ID number system consists of one letter followed by 3 digits. How many different ID numbers are possible with this system?
What is 26,000
The sixth term of the sequence -1/3, 1/9, -1/27, 1/81
What is 1/729
Write the rule for -2, 3, 8, 13
What is a(n) = 5x - 7
The sum from k = 1 to 5 of 2k-1
What is 31
A ball is drawn randomly from a jar that contains five red balls, two white balls, and 1 yellow ball. Find the probability that neither a white nor a yellow ball is drawn.
What is 5/8
In how many different ways can six of ten people be seated in a row of 6 chairs?
What is 151,200
The fifth term of the sequence 1.0, 1.1, 1.21, 1.331
What is 1.4641
Write the rule for 2, 5, 10, 17
What is an = n2 + 1
The sum from k = 1 to 5 of k2
What is 55
A monkey is trained to arrange wooden blocks in a straight line. He is given six blocks showing the letters A,E,H,L,M,T. What is the probability the he will arrange them to spell the word HAMLET
What is 1/720 = .0014
How many different five-card hands can be dealt from a deck of 52 cards?
What is 2,598,960
The sixth term of the sequence 3, 3/2, 0, -3/2
What is -4.5
What is the rule for 3, 3, 3, 3
What is an = 3
The sum from k = 3 to 7 of k(3+k)
What is 210
A card is drawn from a standard 52-card deck and replaced, and a second card is drawn. What is the probability that the first card is an ace and the second card is a spade?
What is 1/52
Twelve dots are drawn on a page in such a way the no three dots are collinear. How many straight lines can be formed by joining the dots?
What is 66