A number series is given below with one number missing, shown by a "?". Choose from the options the correct alternative that will fit the pattern of the series.
2, 6, 12, ?, 30, 42, 56
You are given a question followed by two statements numbered I and II. You have to decide whether the data provided on the statements are sufficient to answer the question.
Question: What does 'sen' stand for in the code language?
I. In the code language, 'you are beautiful' is written as 'sen tou ki'.
II. In the same code language, 'will you have coffee' is written as 'ti sen ae toce'.
A.
Statement I alone is sufficient
B.
Both statements I and II together are not sufficient
In a class, the ratio of boys to girls is 4:5. If four new boys joined the class, the number of boys would increase by 20%. Find the number of girls in the class.
If X and Y can complete a piece of work in 15 days, and X alone can do the same work in 30 days, find how many days will Y alone take to complete the same work?
