SSC CPO 11th Dec 2019 Shift-2

Study the bar graph and answer the question.

The number of neon lamps having life of 600 hours or more but less than 800 hours is what percentage of the total number of neon lamps having a life of 800 hours or more?

As observed from the top of a lighthouse, 45 m high above the sea-level, the angle of depression of a ship, sailing directly towardsit, changes from $$30^\circ$$ to $$45^\circ$$. The distance travelled by the ship during the period of observation is: (Your answer should be correct to one decimalplace.)

A 22 m long ladder (whose foot is on the ground) leans against a wall making an angle of $$60^\circ$$ with the wall. What is the height (in m) of the point where the ladder touches the wall from the ground?

If the difference between the number of computers sold in March and the number of computers sold in January is x, then x lies between:

The number of months, in which the number of computers sold was above 20%ofthe total numberof computers sold in 5 months, was:

A can do $$\frac{2}{5}$$ of a work in 12 days while B can do $$66\frac{2}{3}\%$$ of the same workin 16 days. They work together for 10 days. B alone will complete the remaining work in:

The compound interest amounts on a certain sum at a certain rate percentagep.a. for the second year andthird year are ₹3,300 and ₹3,630, respectively. What is the amountof the same sum atthe samerate in $$2\frac{1}{2}$$ years, interest compounded yearly?

A solid metallic sphere of radius 6.3 cm is melted and recast into a right circular cone of height 25.2 cm. What is the ratio of the diameter of the base to the height of the cone?

The sides of $$\triangle ABC$$ are 10 cm, 10.5 cm and 14.5 cm. Whatis the radius of its circumcircle?

If $$\sqrt{x} + \frac{1}{\sqrt{x}} = 3, x > 0$$, then $$x^2(x^2 - 47) = ?$$