Quantitative Aptitude - Arithmetic Ability Questions

Select the odd word/letters/number/number pair from the given alternatives.

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

The sum of 15 observations of a data is (434 + x). If the mean of the data is x, then the value of x is

If x + [1/(x + 7)] = 0, then what is the value of x – [1/(x + 7)]?

Among three numbers, the first is twice the second and thrice the third, If the average of three numbers is 517, then what is the difference between the first and the third number?

Shrenik switched on a bulb at 2 : 39 : 40 hours and switched it off on the same day at 12 : 30 : 34 hours. For how long was the bulb in switched-on mode?

X and Y started a business by investing Rs 171000 and Rs 243000 respectively. If X’s share in the profit earned at the end of year is Rs 3800, then what will be the total profit (in Rs) earned by them together?

If cosA/(1 - sinA) = x, then the value of x is