NDA questions
2827 published questions with worked solutions.
- The standard deviation of X is 4 and the standard deviation of Y is 5. If the correlation coefficient r is 0 8, then what is the...
- In a class, the probability of passing students in Mathematics is 0 7 and the probability of passing both Mathematics and...
- If the mean of 50 observations is 40 and the standard deviation is 8, then what is the coefficient of variation?
- If two fair dice are tossed, then what is the probability that the sum of the numbers on the faces of the dice is neither 5 nor 7?
- Consider the following statements for three events A, B and C : I. P(A B C) P(A)+P(B)+P(C)-2 II. P(A B C) P(A)+P(B)+P(C) Which of...
- A Mathematics problem is given to two students X and Y to solve. The odds in favour of X solving the problem are 6 to 9 and the...
- The events A and B are independent among three events A, B and D. If P(A B D)=0 04, P(D|A B)=0 25 and P(B)=4P(A), then what is...
- Which one of the following pairs of a river and its tributary is not correctly matched ?
- Arrange the following states in order of their decreasing population size as per the census 2011 : 1. West Bengal 2. Bihar 3....
- Match List I with List II and select the correct answer using the code given below the Lists : List I (River) A. Danube B. Rhine...
- Identify the element having zero valency
- There are six electrons, six protons and six neutrons in an atom of an element. What is the atomic number of the element ?
- Which one of the following has different number of molecules ? (All are kept at normal temperature and pressure)
- Consider the following statements about cactus : 1. The leaves are reduced to spines. 2. The stem does the photosynthesis. Which...
- In which one of the following, methanogens, i.e., methane producing bacteria are not present ?
- Malarial parasite is a
- With reference to biodiversity, which of the following statements is/are correct ? 1. Species richness and high degree of...
- It is difficult to kill viruses because they
- When a ray of light enters a glass slab, then
- A ball is thrown vertically upward from the ground with a speed of 25·2 m/s. The ball will reach the highest point of its journey...