Consider the following statements about numbers. A. There exists a smallest natural number. B. There exists a largest natural number. C. Every rational number is also a real number. D. Between two consecutive natural numbers, there is always a natural number. Choose the correct answer from the options given below:

In Kendriya Vidyalaya, Ujjain, 20 percent of students are athletes. In Navodaya Vidyalaya, Ujjain, 25 percent of students are athletes. If Navodaya Vidyalaya has 60% more students than Kendriya Vidyalaya, then the number of athletes in Navodaya Vidyalaya is what percent of the at…

If height and radius of right circular cylinder are equal and its volume is 176/7 cm³, then its radius (= height) is

Sudhir purchased a chair with three successive discounts of 20%, 12.5% and 5%. The equivalent single discount is:

In triangles ABC and ADC in the above figure, ∠BAC = ∠ADC = 90°. Also, DC is 2 units long and AC is 4 units long. What is the length of BC? (Figure: right triangle ABC with right angle at A; D lies on BC with AD ⊥ BC.) [Figure: see page 4 of source PDF]

Four different electronic devices make a beep after every 30 minutes, 1 hour, 1½ hour and 1 hour 45 minutes, respectively. All these devices beeped together at 12 noon. They will again beep together at

A person buys two watches for a total sum of Rs. 1,000. He sells one watch at a loss of 5% and the other at a gain of 20% and on the whole, he gains Rs. 50. The cost prices of the two watches are:

Raman can do a piece of work in 16 days. Satish can do the same work in 8 days while Ashok can do it in 32 days. All of them worked together when they started, but Satish left after 2 days. Raman left 3 days before the completion of work. How long did it take to complete the enti…

85 litres of a mixture contain milk and water in the ratio 27:7. How much more water is required to be added in the mixture, so that the resulting mixture contains milk and water in the ratio 3:1?