Quantitative Aptitude - Arithmetic Ability Questions

If x+1x = 2, then x2+1x2 = ?

If the time increases by 7 years, then simple interest increases by Rs 8400 on a sum of Rs 6000. What is the rate (in percentage) of interest per annum?

X alone can do a piece of work in 12 days and Y alone can do the same work in 6 days. In how many days will both together complete the same work?

In the following question, select the odd letter group from the given alternatives.

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

Four pairs of words are given. Find the odd one out.

If (333 + 333 + 333) (233 + 233) = 6x, then what is the value of x?

If P = 99, then the value of P(P2+ 3P + 3) is