Question:

What are the next 2 numbers?

72 →53→34→25

Number 53 is derived from 72. 34 is derived from 53. 25 is derived from 34. What are the next 2 numbers in the sequence?

Answer:

7x7+2x2=53, 5x5+3x3=34, 3x3+4x4=25

The next two numbers are 2x2+5x5=29, 2x2+9x9=85

Question:

Plug in + - x to make the resulting number 100 (1) 

You can not change the order of the digits. You also can not combine 2 digits or more into one number without a mathematical operator +, - or x (without parentheses). The target resulting number is 100.

There are more than 1 ways to make this equation. You should be able to make it at least 3 ways. If you can make it more than 4 ways, you are a genius!!!

Answer:

1+2+3+4+5+6+7=8x9=100

(1+2)x3+4x5+6+7x8+9=100

1-2+3x4x5+6x7+8-9=100

-1+2x3x4+5x6+7x8-9=100