The average marks obtained by Suvir in 15 tests is 29. Ruchira is maintaining an average of 27 so far but has taken only 11 of the tests so far. How much does Ruchira have to score on an average in the remaining four tests to match Suvir’s performance?
You are given a question and two statements. Identify which of the statements is/are necessary/sufficient to answer the question.
Question: How many sons does X have?
Statements:
1. Y and Z are brothers of W.
2. The mother of Z is wife of W’s father.
A.
1 alone is sufficient while 2 alone is not sufficient
B.
Neither 1 nor 2 alone is sufficient
C.
Both 1 and 2 together are sufficient
D.
2 alone is sufficient while 1 alone is not sufficient
Which of the following statements is/are true?
A. Solid CO2 is known as dry ice.
B. The particles of liquid absorb energy from the surrounding to regain the energy lost during evaporation.
C.Solid CO2 gets converted directly to the gaseous state.
