RRB Group-D 17th Sep 2018-shift -2
For the following questions answer them individually
Let A(O,-1), B(0,3) and C(2,1) be three points. Let $$\triangle_1$$ be the area of the triangle ABC and $$\triangle_2$$ be the area of the triangle formed by the mid points of the sides of the triangle whose vertices are A, B and C such that $$\frac{\triangle_1}{\triangle_2} = \frac{1}{x}$$ Find the value of $$x$$.
Ranjith can complete a task in 25 days while Anji can finish it in 20 days. They work together on the task for 5 days and then Ranjith leaves. In how many days will Anji finish the remaining work?
The mass number of an isotope of an element is 298. If its nucleus has 189 neutrons, what is its atomic number?
You are given a question and two statements. Identify which of the statements is/are necessary,Sufficient to answer the question.
M, A, N and K are standing in a row. Based on the following information, if we aimnge shortest to tallest, who is standing last?
Statements:
1. A is shorter than K
2. M is shorter than A
If the present ages of a father and his son are 48 years and 28.8 years old respectively, then the father can say to his son, "I was ......... of your present age when you were born".
