Select the odd word/letters/number/number pair from the given alternatives.
1). 7214
2). 3618
3). 3519
4). 9436
If tan$\frac{A}{2}$ = x, then the value of x is
1). $\frac{sinA}{(1 - cosA)}$
2). $\frac{sinA}{(1 + cosA)}$
3). √[$\frac{sinA}{(1 + cosA)}$]
4). √[$\frac{sinA}{(1 - cosA)}$]
In a certain code language, 'RIVER' is written as '12351' and 'RED' is written as '156'. How is 'DRIVER' written in that code language?
1). 612311
2). 612531
3). 621351
4). 612351
Reduce $\frac{3596}{4292}$ to lowest terms.
1). $\frac{29}{37}$
2). $\frac{17}{43}$
3). $\frac{31}{37}$
4). $\frac{19}{23}$
A car travels a certain distance at 32 km/h and comes back at 68 km/h. What is the average speed for total journey?
1). 50 km/hr
2). 37.04 km/hr
3). 43.52 km/hr
4). 56.48 km/hr