Quantitative Aptitude - Arithmetic Ability Questions

If a+1b=1 and b+1c=1 , then the value of c+1a is

If the angle of elevation of the sun decreases from 45° to 30°, then the length of the shadow of a pillar increases by 60m. The height of the pillar is

What is the value of 1.23+0.83+0.73-2.0161.351.22+0.82+0.72-0.96-0.84-0.56 =

In a motor of 120 machine parts, 5% parts were defective. In another motor of 80 machine parts, 10% parts were defective. For the two motors considered together, the percentage of defective machine parts were

Find out the odd word/letters/number pair from the given alternatives

A cylindrical vessel of height 5 cm and radius 4 cm is completely filled with sand. When this sand is poured out it forms a right circular cone of radius 6 cm. What will be the height of this cone? (Take π = 22/7)

What is the equation of the line whose y-intercept is -3 and makes an angle of 45° with the positive x-axis?

There are total 200 students in a school, of which 1/5th are boys. Find the number of girls in the school.