commlab india Interview Questions

P and Q can do a piece of work in 7 days. With the help of C they finish the work in 5 days. R alone can do that piece of work in?

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A train 100 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?

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If 70% of an equal to 40% of b, then ratio between a and b is?

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A car is travelling at a uniform speed. The driver sees a milestone showing a 2-digit number. After travelling for an hour the driver sees another milestone with the same digits in reverse order. After another hour the driver sees another milestone containing the same two digits. What is the average speed of the driver.

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Value of (x-a)(x-b). . . . (x-z)

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A lends Rs. 2500 to B and a certain to C at the same time at 7% p.a. simple interest. If after 4 years, A altogether receives Rs. 1120 as interest from B and C, then the sum lent to C is?

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A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is?

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Two matrices A and B are added if
A. no of rows of A is equal to no of columns of B
B. no of columns of A is equal to columns of B
C. both have same order
D. both are rectangular

144 viewsAdmin Changed status to publish December 30, 2021Aptitude Matrices and determinants

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The length of a rectangle is halved , while its breadth is tripled , what is the percentage change in area ?
A. 40%
B. 50%
C. 60%
D. 70%

513 viewsAdmin Changed status to publish November 18, 2021Aptitude Areas

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What is the smallest number by which 3600 be divided to make it a perfect cube ?
A. 550
B. 500
C. 450
D. 400

235 viewsAdmin Changed status to publish November 23, 2021Aptitude Square root and Cube root

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If you were given 10 lakhs what business you would like to open and why?

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√324/1.5 = ?/ √256
A. 190
B. 192
C. 194
D. 196

662 viewsAdmin Changed status to publish November 23, 2021Aptitude Square root and Cube root

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190, 166, 145, 128, 112, 100, 91
A. 118
B. 128
C. 138
D. 148

171 viewsAdmin Changed status to publish December 30, 2021Aptitude Odd Man Out and Series

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A cone of height 9 cm with diameter of its base 18 cm is carved out from a wooden solid sphere of radius 9 cm. The percentage of the wood wasted is :
A. 60%
B. 65%
C. 70%
D. 75%

188 viewsAdmin Changed status to publish November 24, 2021Aptitude Volume and Surface Area

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What is the spherical excess of a spherical triangle whose angles are all right angles?
A. 15°
B. 30°
C. 60°
D. 90°

228 viewsAdmin Changed status to publish January 1, 2022Aptitude Trigonometry

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