In a class, 156 study science and Mathematics. If they passed atleast one subject and twice as many passed both subject, find how many passed in mathematics only

To find out how many students passed in mathematics only, we need to analyze the given information step by step. Let's break it down:

1) We are told that 156 students study both science and mathematics. This means these students passed both subjects, as they are considered in both categories.

2) We are further informed that twice as many students passed both subjects. This means the number of students who passed both subjects is twice the number of students studying both subjects. Therefore, the number of students who passed both subjects is 2 * 156 = 312.

3) Now, we need to find the number of students who passed only mathematics. To do this, we subtract the number of students who passed both subjects (312) from the total number of students who study science and mathematics (156).

156 - 312 = -156

This result (-156) doesn't make sense, as it suggests that there are negative students. It's possible that there may be a mistake in the given information or the way the question has been formulated. However, based on the information provided, it seems that there might be an error.