Numbers and Sequences

Which of the following numbers is/are rational number(s)

• 18

• 6/5

• 2.625

0.523666... is a/an

• integer

• natural number

• rational number

• irrational number

2, 2x4, 8x4, 32x4, 128x4 ........ is a geometric sequence with a common ratio of 4.

2, 4, 8, 16, 32, ....... is ?

• an arithmetico-geometric sequence

• a geometric sequence

• an arithmetic sequence

• a protomeric sequence

What is the meaning of 'r' in a geometric sequence?

• It is the 'rational'

• It is the 'ration'

• It is the 'ratio'

• It is the 'relation'

What is the sum formula (Sn) of a finite arithmetic sequence?

Is the sequence geometric? If so, identify the common ratio.

6, 12, 24, 48

• yes, 2

• yes, -2

• yes, 4

• no

Find the next four terms of the arithmetic sequence 16, 24, 32,...

• 40, 48, 56, 64

• 36, 40, 44, 48

• 35, 40, 45, 50

• 40, 44, 50, 56

What are the next four terms of the arithmetic sequence 122, 111, 100, ...?

• 89, 78, 67, 56

• 95, 90, 85, 80

• 92, 88, 84, 80

• 99, 88, 77, 66