Q. In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces.
2, 3, 5, 7, 11, x, 17
Q. A car covers a distance of 715 km at a constant speed. If the speed of the car would have been 10 km/hr more, then it would have taken 2 hours less to cover the same distance. What is the original speed of the car?
Option
a) 45 km/hr
b) 50 km/hr
c) 55 km/hr
d) 65 km/hr
Q. Two trains running at x meters per second and y meters per second cross the same tunnel in a seconds and b seconds respectively. If the difference of lengths in the trains is m meters, then-Option
Option
A) m=xa - yb
B) 1/m=1/(xa) + 1/(yb)
C) m=xa + yb
D) m/(xa)=yb + 1Q
A shopkeeper has 13 washing machines out of which 5 are defective. A customer buys 3 washing machine. What is the probability that exactly one machine is defective?
(a) 1/20 (b) 1/5 (c) 70/143 (d) 35/143
Supriya runs a marathon race in 50 minutes at an average speed of 48 km/hrs . in order to set a national record she needs to win the race in 40 minutes considering that her speed remains constant at what minimum speed should she run to set the record?
The person who can solve mathematical problems,can lead life easily ,Maths tellu that every problem as solution...we can find number of solutions for one problem ...Aplly it in the life also we can lead our life happily...
swetha
Maths is just like a lantern that enlightens your life with numbers