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rrb Exam Pattern, rrb Questions with Answers Page 5

(#M40107613) RRB QUESTION Keep an EYE

An equilateral triangle with each side = x cm is inscribed in a circle. Find the radius r of the circle in terms of x.

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107612) RRB QUESTION Keep an EYE

When Lee was thrice as old as Kevin,
His sister Kate was twenty-seven.
When Kevin was half as old as Kate,
Then brother Lee was thirty-eight.
Their ages add to one forty three.
How old are Kevin, Kate and Lee?

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107611) RRB QUESTION Keep an EYE

The average of 10 students test scores was 69. Three students scored 80, 60 and 40, respectively. Three students scored 90 and two students scored 50. The other two students received the same score. What were their scores?

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107609) RRB QUESTION Keep an EYE

Alex, Fred and Thomas run at constant rates. In a race of 1000m, Alex finished 200m ahead of Fred and 400m ahead of Thomas. When Fred finished, how far was he ahead of Thomas? (in m)

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107608) RRB QUESTION Keep an EYE

The mass of the Great Pyramid is 557t greater than that of the Leaning Tower of Pisa. Stone Henge has a mass of 2695t, which is 95t less than the Leaning Tower of Pisa. There once was a Greater Pyramid which had a mass twice that of the Great Pyramid. What was the mass of the Greater Pyramid.

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107607) RRB QUESTION Keep an EYE

You wish to temporarily mount a wire to serve as the antenna of your transmitter in your laboratory. It is necessary that this be straight and as long as possible. You recall that when you had the floor covered required exactly 200 square yards of carpet and that the long side of the room was 20 yards. You also know that the height of the room is 12 feet. You go to the store room to get the wire but find that it can only be supplied in lengths that are an integral multiple of 1 meter. What length of wire do you take back to the lab?

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107606) RRB QUESTION Keep an EYE

An urn contains three white and four black balls. One of the balls is drawn out of the urn. Find the probability that the ball is white.

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107604) RRB QUESTION Keep an EYE

An urn contains three white and four black balls. We take out a ball and put it in a drawer without looking at it. After that we take out a second ball. Find the probability that this ball is white.

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107603) RRB QUESTION Keep an EYE

A farmer has a circular field, radius R metres, in which he has a goat tethered to one edge by a length of chain, L metres long. If the goat is able to graze exactly half of the available area, find an expression for L in terms of R.

Asked In RRB Jaspalsingh Parmar (10 years ago)

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(#M40107602) RRB QUESTION Keep an EYE

A piece of straight, level rail whose length is one mile in winter increases in length by one foot in summer. If the ends were firmly anchored in winter, we are to assume that the rail will become an arc of a circle in summer. How far will the center point move relative to its winter position?

Asked In RRB Jaspalsingh Parmar (10 years ago)

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