Quantitative Aptitude - Arithmetic Ability Questions

If (8 - 10x) - (13x - 2) = -9, then the value of x is

At a telephone exchange, three phones ring at intervals of 20 sec, 24 sec and 30 seconds. If they ring together at 11 : 25 a.m, when will they next ring together?

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

In the following question, select the odd number pair from the given alternatives.

What is the value of Cot 45° - (1/√3)Cosec 60°?

If x + 1x = -2, then the value of x631 + 1x632?

30% of a number exceeds 25% of the same number by 27. What is the value of the number?

A boy crosses a 300 metres wide road in 30 seconds. What is his speed (in km/hr)?