There are four machines in a factory. At exactly 8 pm, when the mechanic is about to leave the factory, he is informed that two of the four machines are not working properly. The mechanic is in a hurry, and decides that he will identify the two faulty machines before going home, and repair them next morning. It takes him twenty minutes to walk to the bus stop. The last bus leaves at 8 :32 pm. If it takes six minutes to identify whether a machine is defective or not, and if he decides to check the machines at random, what is the probability that the mechanic will be able to catch the last bus?A. 0 B. 1/6C. 1/4D. 1/3E. 1
2c2/4c2=1/3 ?
2c2 to select the two defective machines or the non defective machines and 4c2 to select any 2 machines. as it is clear if he selects any other mix of machines like D,ND or ND,D then he will have to chk the 3rd machine and he will miss the last bus
2c2/4c2=1/3 ? 2c2 to select the two defective machines or the non defective machines and 4c2 to select any 2 machines. as it is clear if he selects any other mix of machines like D,ND or ND,D then he will have to chk the 3rd machine and he will miss the last bus
A straight line through point P of a triangle PQR intersects the side QR at the point S and circumcircle of the triangle PQR at the point T. If S is not the centre of the circumcircle, then which of the following is true? A. (1/PS) + (1/ST) B. (1/PS) + (1/ST) C. (1/PS) + (1/ST) > 1/ sqrt [(QS)(QR)] D. (1/PS) + (1/ST) > 4/QR E. None of the above
The micromanometer in a certain factory can measure the pressure inside the gas chamber from 1 units to 999999 units. Lately this instrument has not been working properly. The problem with the instrument is that it always skips the digit 5 and moves directly from 4 to 6. What is the actual pressure inside the gas chamber if the micromanometer displays 003016? A. 2201 B. 2202 C. 2600 D. 2960 E. None of the above options
lol oops little typo 2c1 the cases when he selects both defective in the first go or the two non defective ones. if any one of the two cases is found to be true he catches his bus lol looks like i need to catch mine :P
The micromanometer in a certain factory can measure the pressure inside the gas chamber from 1 units to 999999 units. Lately this instrument has not been working properly. The problem with the instrument is that it always skips the digit 5 and moves directly from 4 to 6. What is the actual pressure inside the gas chamber if themicromanometer displays 003016?A. 2201B. 2202C. 2600D. 2960E. None of the above options
good question! :thumbsup:
we can treat it as if this number is in 9 base.
=> we can convert (3015) base 9 to base 10 (5 has been skipped, so 3016 in this query can be treated as 3015 of base 9)
@gs4890Thanks... but @milestogo3 Nam myoho ho rengey kyo..!!! I didn't you too from SGI..Could you please explain the step..I am not aware about the correct steps required for approximation...
Ram, a farmer, managed to grow shaped watermelons inside glass cases of different shapes. The shapes he used were: a perfect cube, hemi-spherical, cuboid, cylindrical along with the normal spherical shaped watermelons. Thickness of the skin was same for all the shapes. Each of the glass cases was so designed that the total volume and the weight of all the water-melonswould be equal irrespective of the shape. 1 Mark A customer wants to buy water-melon for making juice, for which the skin of the water-melon has to be peeled off, and therefore is a waste. Which shape should the customer buy? A. Cube B. Hemi-sphere C. Cuboid D. Cylinder E. Normal spherical
Ram, a farmer, managed to grow shaped watermelons inside glass cases of differentshapes. The shapes he used were: a perfect cube, hemi-spherical, cuboid, cylindrical along with the normal spherical shaped watermelons. Thickness of the skin was same for all the shapes. Each of the glass cases was so designed that the total volume and the weight of all the water-melonswould be equal irrespective of the shape. 1 MarkA customer wants to buy water-melon for making juice, for which the skin of the water-melon has to be peeled off, and therefore is a waste. Which shape should the customer buy?A. CubeB. Hemi-sphereC. CuboidD. CylinderE. Normal spherical
spherical that allows it to be of minm surface area while maintaining the same volume, since the thickness is same for all shapes
Ram, a farmer, managed to grow shaped watermelons inside glass cases of differentshapes. The shapes he used were: a perfect cube, hemi-spherical, cuboid, cylindrical along with the normal spherical shaped watermelons. Thickness of the skin was same for all the shapes. Each of the glass cases was so designed that the total volume and the weight of all the water-melonswould be equal irrespective of the shape. 1 MarkA customer wants to buy water-melon for making juice, for which the skin of the water-melon has to be peeled off, and therefore is a waste. Which shape should the customer buy?A. CubeB. Hemi-sphereC. CuboidD. CylinderE. Normal spherical
good question! we can treat it as if this number is in 9 base.=> we can convert (3015) base 9 to base 10 (5 has been skipped, so 3016 in this query can be treated as 3015 of base 9)=> actual pressure=5+1*9^1+3*9^3=2201
dost i have a doubt...agar lets say, the meter jumps from 7-9..(means skips 8)
The micromanometer in a certain factory can measure the pressure inside the gas chamber from 1 units to 999999 units. Lately this instrument has not been working properly. The problem with the instrument is that it always skips the digit 5 and moves directly from 4 to 6. What is the actual pressure inside the gas chamber if themicromanometer displays 003016?A. 2201B. 2202C. 2600D. 2960E. None of the above options
Three friends A,B and C went for picnic. A carried 3 chapatis ,B carried 4 chapatis and C did not carry any chapati but was having 14 rupees with him.they sat under a tree and then it was decided that chapati would be equally shared among them,and in return C gave 14 rupees to them. How should they divide 14 rupees between them(i.e A and B). a)A-6,B-8 b) A-4,B-10 c) A-7,B-7 d) None of the above
A straight line through point P of a triangle PQR intersects the side QR at the point S and circumcircle of the triangle PQR at the point T. If S is not the centre of the circumcircle, then which of the following is true?A. (1/PS) + (1/ST) B. (1/PS) + (1/ST) C. (1/PS) + (1/ST) > 1/ sqrt [(QS)(QR)]D. (1/PS) + (1/ST) > 4/QRE. None of the above
D?
Take an equilateral triangle with side 1 QR = 1 PT = 2 * rt(3) / 2 * 2/3 = 2/rt(3) PS = rt(3)/2 ST = PT - PS = 1/(2rt(3))