A student got 30% marks in an examination and failed because he got 12 marks less. Another student got 40% marks in the same examination and got 18 marks more than the minimum passing marks. Must have marks to pass

A store sells a watch for a profit of 25% of the cost. Then the percentage of profit against selling price is-

What value will come in place of question mark (?) in the questions given below?

88 × 25 ÷ 4 + 6³ = ?

The respective ratio between the present ages of Rani and Moni is 6 : 7. If Moni is 4 years older than Rani, then what will be the respective ratio of the ages of Rani and Moni after 4 years? 

A and B together can complete a particular task in 6 days. If A alone can complete the same task in 10 days, how many days will B take tocomplete the task if he works alone?

A dozen pairs of socks quoted at 180 are available at a discount of 20 %. How many pairs of socks can be bought for 48? 

If 3 tan θ - 4 = 0 and 180° < θ < 270° then cosec θ = _______

The value of $$ \sqrt{11.981+7\sqrt{1.2996}}$$ is closest to