Radical Expressions
exponents
Geometric Sequence
Exponential Function/ Nth Term
Riddles
100

square root of 8

2 square roots of 2 

100

4x 46

49

100

2,4,8,16,..

yes; 2

100

4(an - 1)  ; A1= 14

52

100

I have no life, but I can die.. what am I? 

A Battery

200

square root of 45 

3 square roots of 5

200

56/54

52

200

1,4,8,13,19

Not geometric

200

9(AN -1)  ;  A1= 43

378

200

What has many keys, but can't open up any locks? 

A piano

300

square root of 245

7 square roots of 5

300

81670

1

300

-3, -15, -75, -375

yes ; 5

300

(3/4) (An -1)  ; A1= 35

25.5

300

You see a boat filled with people, It has not sunk, but when you look again you don't see a single person on the boat.. why? 

They are married/ in a relationship

400

2 times the square root of 72

12 square roots of 2

400

(x + y) 5

x+ y5

400

23, -69, 207, -621

yes ; -3

400

y = 3x 

Show Graph

400

I'm odd, but take away one letter and I become even.. what am I? 

seven

500

4 times square root of 300 

40 square roots of 3

500

3-6

1/36

500

158.4, 79.2, 39.6, 19.8

yes ; 0.5

500

y = - 2/3x

Show graph

500

What appears once in a minute, twice in a moment, but not once in a thousand years?

The letter M