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1.

If a boat goes a certain distance at 30 km/h and comes back the same distance at 20 km/hr, what is the average speed (in km/hr) for the total journey?1). 252). 24.53). 244). 25.5

Answer»

Its very SIMPLE QUESTION 24.5 is the CORRECT ANSWER.
Discussion
2.

If $Cos\theta $ = $\frac{5}{13}$, then $Cosec\theta $ = ?1). $\frac{5}{12}$2). $\frac{12}{5}$3). $\frac{13}{5}$4). $\frac{13}{12}$

Answer» ANSWER for this QUESTION is $\FRAC{13}{12}$
Discussion
3.

Sec 45% + Tan 30% =1). $\frac{\left(\sqrt{6}+1\right)}{\sqrt{3}}$2). $\frac{\left(1 + \sqrt{3}\right)}{2}$3). $\frac{\left(\sqrt{3}+2\right)}{\sqrt{3}}$4). $\frac{5}{\sqrt{3}}$

Answer»

Its TOUGH but OPTION 1 SEEMS CORRECT
Discussion