There are 1000 doors that are of the open-close type. When a person opens the door he closes it and then opens the other. When the first person goes he opens-closes the doors ion the multiples of 1 i.e., he opens and closes all the doors. When the second goes he opens and closes the doors 2, 4 6 8 rely. Similarly when the third one goes he does this for 3 6 9 12 15th doors rely. Find number of doors that are open at last.
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If a car starts from A towards B with some velocity.Due to some problem in the engine after travelling 30km, the car goes with 4/5 th of its actual velocity The car reaches B 45 min later to the actual time.If the car engine fails ofter travelling 45km, the car reaches the destination B 36min late to the actual time .What is the initial velocity of car and what is the distance between A and B in km ?
three taps a, b, c, together can fill an empty cistern in 10 minutes. the tap a alone can fill it in 30 minutesand the tap b alone 40 minutes. how long will the tap c alone take to fill it
hoe 1000000000 can be written as a product of two factors neither of them containing zeros
If asked you, why you want to regin the current company/organisition
A sum of Rs 312 is divided among 100 boys and girls such that every boy gets an amount of Rs 3.60 and every girl gets 2.40 Rs. Calculate the number of girls in the group.
Imagine you are standing in front of a mirror, facing it. Raise your left hand. Raise your right hand. Look at your reflection. When you raise your left hand your reflection raises what appears to be his right hand. But when you tilt your head up, your reflection does too, and does not appear to tilt his/her head down. Why is it that the mirror appears to reverse left and right, but not up and down?
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A company installed 36 machines at the beginning of the year. In March they installed 9 additional machines and then disconnected 18 in August. How many were still installed at the end of the year.
A person has his own coach&whenever he goes to railway station he takes his coach.One day he was supposed to reach the railway station at 5 O'clock.But he finished his work early and reached at 3 O'clock. Then he rung up his residence and asked to send the coach immediately. He came to know that the coach has left just now to the railway station. He thought that the coach has left just now to the railway station.He thought that he should not waste his time and started moving towards his residence at the speed of 3mi/hr.On the way,he gets the coach and reaches home at 6 o'clock.How far is his residence from railway station.
In a cycle race there are 5 persons named as J, K, L, M, N participated for 5 positions so that in how many number of ways can M make always before N?
Find the missing number in the series: 2, 5, __ , 19 , 37, 75
2+3=8, 3+7=27, 4+5=32, 5+8=60, 6+7=60, 7+8=? Reply t answer...
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