The total body weight of the average adult is `50000\ gr a m s` b. `\ 70000\ gr a m s` c. `l e s s\ t h a n 50\ kg` d. `mor e\ t h a n\ 51\ kg` e. none of these

A train running at the speed of 60 kmph crosses a 200 m long platform in 27 seconds. What is the length of the train ? 200 m e t r e s b. 240 m e t r e s c. 250 m e t r e s d. 450 m e t r e s e. none of these

If n is a whole number such that n+n=n ,\ t h e n\ n=? (a) 1 (b) 2 (c) 3 (d) none of these

A sped of 30.6 km/hr is the same as 5. 1 m//s e c b. 8. 5 m//s e c c. 110. 16 m//s e c d. none of these

If a runner takes as much time in running 20 metres as the car takes in covering 50 metres. The distance covered by the runner during the time the car covers 1 km is 400 m e t r e s b. 40 m e t r e s c. 440 m e t r e s d. none of these

Train A crosses a stationary train B in 50 second and a pole in 20 seconds with the same speed. The length of the train A is 240 metres. What is the length of the stationary train B. 260 m e t r e s b. 300 m e t r e s c. 360 m e t r e s d. Cannot be determined e. none of these

If m ,n in Na n dm^2-n^2=13 ,t h e n(m+1)(n+1) is equal to a. 42 b. 56 c. 50 d. none of these

A 60 kg body moving with speed 12 m/s collides inelastically with another body of mass 50 kg moving in same direction with speed 2 m/s. After collision the 50 kg body moves with a speed of 10 m/s. The value of coefficient of restitution (e) is :-

Two spinning machines A and B can together produce 3,00,000 metres of cloth in 10 hours. If machine B alone can produce the same amount of cloth in 15 hours, then how much cloth can machine A produce alone in 10 hours? 50 , 000 m e t r e s b. 1, 00 , 000 m e t r e s c. 1, 50 , 000 m e t r e s d. 2, 00 , 000 m e t r e s

The average weight of 3 men A, B and C is 84 kg. Another man D joins the group and the average now become 80 kg. If another man E, whose weight is 3 kg more than that of D, replaces A, then average weight of B, C, D and E becomes 79 kg. The weight of A is.

Find the volume in cubic metre (cu. m) of each of the cuboids whose dimensions are: l e n g t h = 12 m , b r e a dt h=10 m , h e igh t=4. 5 m l e n g t h = 4m , b r e a dt h = 2. 5 m , h e igh t = 50 c mdot l e n g t h = 10 m , b r e a dt h = 25 d m , h e igh t = 25 c mdot