For the following questions answer them individually
P can do some work in 4 hours. Q and R together can finish it in 3 hours while P and R can do
it in 2 hours. How long will Q take to complete it, if he works alone?
The frequency of a sound wave is 50 Hz and its wavelength is 4 m. What is the speed of the sound wave?
The present age of a mother and daughter is in the ratio of 8 : 3. After 12 years, the ratio of their ages will be 2 : 1. What is the sum of the present age of the mother and the daughter?
How long does a train 110 m long running at a speed of 72 km/h take to cross a bridge 132Â metres in length?
Choose the figure that best represents the relationship among the classes given below?
Mother, Children, Human, Father.
In this question, two statements are given followed by a conclusion. Find out which of the
alternatives justifies the given conclusion.
Statements:
1) Coals are atoms of carbon.
2) Diamonds are atoms of carbon.
Conclusion:
Diamonds are coal.
