The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: there are 7 executives , including the ceo and cfo , that are asked to form a small team of 4 members . however , the ceo and cfo may not both be assigned to the team . given this constraint , how many ways are there to form the team ?

Output: 25


Input: Consider Input: Problem: find out the c . i on rs . 5000 at 4 % p . a . compound half - yearly for 1 1 / 2 years ?

Output: 306.04


Input: Consider Input: Problem: if abc = ab ^ 3 = 180 where a , b and c are positive integers , what is the value of ` c ’ ?


Output: 1