Xi-Math(Quadratic equation, sequences and series)

How many terms are there in the sequence -1, -5/6, -2/3, ……….. 10/3 ?

• 25

• 26

• 27

• 28

Find the 8th term of the sequence whose general term is 

 $2n^2$  -3n+1

• 105

• 110

• 115

• 118

nth term of 5, 3, 1, –1, –3, –5, ……… is

• 2n – 7

• 7 – 2n

• 2n + 3

• 2n + 5

Find the mentioned term from the following,

 $2,\ 1\frac{1}{2}$  ,1, ....... , $t_{35}$  

• -17

• -15

• 19

• 13

Which number below is a term of this arithmetic sequence? 97, 91, 85, 79, 73, . . .

• -74

• -75

• -76

• -77

Which arithmetic sequence has d= $-8$   and t $t_{10}$  =  $-$  45?

• 27, 19, 11, 3, . . .

• -8, -12, -16, -20

• -5, -13, -21, -29, . . .

• -27, -19, -11, -3, . . .

This sequence is arithmetic: -8, -11, -14, . . .

Write a rule for the nth term.

• tn = -5 - 3n

• tn = 5 + 3n

• tn = -5 + 3n

• tn = 5 - 3n

The nth term of 1, $\frac{1}{2},\ \frac{1}{3},\ .....$  is

• n+1

•  $\frac{1}{n-1}$  

•  $\frac{n}{n+1}$  

•  $\frac{1}{n}$  

If t4 = -5 and t7 = -20; determine d and t1 .

• -25, 10

• 15, 4

• -5, 10

• 5, 10

If ) t1 = 3, d = 4, and tn = 59; determine n

• 5

• 10

• 12

• 15