A smaller circle touches a bigger circle internally and also passes through the center 'O' of the bigger circle. If the area of the smaller circle is 192 cm2, the area of the bigger circle (in cm2. ) is:
The HCF and the LCM of two numbers are 5 and 120, respectively. If the sum of the two numbers is 55, then the sum of the reciprocals of these two numbers is equal to:
\(\tfrac{55}{601}\)
\(\tfrac{11}{120}\)
\(\tfrac{120}{11}\)
\(\tfrac{601}{55}\)
A thief escapes from a police station at 8:00 am on a cycle at a speed of 50 km/h. A policeman starts chasing the thief on a motorbike at 9:30 am. at the speed of 65 km/h. At what distance from the police station will the policeman catch up with the thief?
A and B leave from point M at the same time towards point N. B reaches N and starts towards M instantly. He meets A at point O (between M and N). The distance between M and N is 245 km. If the speeds of A and B are 26 km/h and 65 km/h, respectively, then what is the distance between O and N?
What is the value of
\(\frac{156}{257}\)
\(\frac{391}{210}\)
\(\frac{395}{282}\)
\(\frac{392}{515}\)