Quantitative Aptitude - Arithmetic Ability Questions

What is the simplified value of (sec A + cos A)(sec A – cos A)?

Select the odd letters from the given alternatives.

Reflection of the point (­2,5) in the x­ axis is

The variance of a set of data is 121. Then the standard deviation of the data is

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

When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his % profit?

Sunil started his journey at 2:33:34 p.m. and reached the destination at 4:43:45p.m. Anil started the journey 45 min 27 secs after Sunil and reached the destination 37 mins 16 secs after him. How long did Anil take to complete his journey?

Δ ABC is right angled at B. If m∠A = 30°. What is the length (in cm) of AB, if AC = 8 cm?