A sphere is split in the ratio 1 : 3. The larger part is molded into a cone having a height equal to the radius of its base, while the smaller part is molded into a cylinder having a height equal to the radius of its base. What would be the ratio of the radius of the base of the cone to the height of the cylinder?

Mohan starts to calculate sum of all odd natural number less than 83. What result does he get?

Find the first negative term of the below A.P.
129, 120, 111, 102,......

In the following series, one letter is missing as shown by the question mark (?). Select the missing term from the given options.
Q, O, L, H, ?

In a running race, if you overtake the last but one contestant, which position are you in?