Use beginner python code to solve:

1. Write a program that computes the sum of all odd numbers less than a given number.

Please enter the maximum number: 11

The sum of all even numbers between 1 and 11 is 36.

2. Write a program that reads an integer and displays a triangle of the given base length.

Please enter a number: 3

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3. Write a program that first asks the user to type in todays price of one dollar in Japanese yen, then reads Japanese yen values and converts it to US Dollars. Use a sentinel value to denote the end of dollar inputs.

As of today, $1 is equivalent to how many yen? 129.20

Enter an amount: 753.60

Enter an amount:

752.60 yen is equivalent to $5.83