Pi Day(Game 1)

Riddles

100

If four chairs can be made by four men in four hours, how many chairs can be made by eight men in eight hours?

16

200

Tom said that, in two years, his age would be twice as old as he was exactly five years ago. What is Tom’s age now?

12

300

If seven people meet each other and each shakes hands only once with each of the others, how many handshakes will there have been?

21

400

What is the smallest whole number that is equal to seven times the sum of its digits?

21

500

What is the smallest number that increases by 12 when it is flipped and turned upside down?

86

Number Series

100

3, 10, 17, 24, _

31

200

 4, 9, 16, 25, _

36

300

-1, -7, -17, -31,

-49

400

 -1, 1, 3, -4, -9, 16, 27, -64, _, _

-81, 256

500

2, 9, 28, 65, 126, _

217

Guess the Graph

100

IMG 1

4x + 1

200

IMG 2

3x² - 3

300

IMG 3

2x³ + 1

400

IMG 4

2^x + 7

500

IMG 5

x!

Coding and Decoding

100

In a certain code BOMB is written as 5745 and BAY is written as 529, how is BOMBAY written in that code?

574529

200

In a certain code MAN is assigned a value of 28. What is the value assigned to OMEGA in that code?

41

300

In a certain code EULER is written as FWOIW, then what is SIGMA written as?

TKJQF

400

In a certain program DATA*1 has the value 41201, then what is the value of (PHI/XI)*249

1689

500

In a certain program ‘b’ has the value 2, ‘B’ has the value -3,  and Beta has the value 23. What is the value of Iota?

26

Mental Calculations

100

117 + 328

445

200

-466 + 217

-249

300

107 * 93

9951(can be done using (100+7)(100-7) = 100² - 7²)

400

3^6

729

500

Find (2401)^1/4 where answer is a natural number

7