If $\frac{a^{2}}{b+c}$ = $\frac{b^{2}}{c+a}$ = $\frac{c^{2}}{a+b}$ =1 then $\frac{1}{1+a}$ + $\frac{1}{1+b}$ + $\frac{1}{1+c}$ is
1). 1
2). 2
3). 3
4). 4
The angle of elevation of the top of a tower from two horizontal points (in opposite sides) at distances of 25 meter and 64 meter from the base of tower
are x and 90° - x respectively . The height of the tower will be
1). 39 m
2). 89 m
3). 1 . 6 m
4). 40 m
From an external point two tangents to a circle are drawn. The chord passing through the points of contact subtends an angle72° at the centre. The angle between the tangents is?
1). 36°
2). 72°
3). 108°
4). 144°
In Δ ABC, the height CD intersects AB at D. The midpoints of AB and BC are P and Q respectively. If AD = 8 cm and CD = 6 cm, then the length of PQ is?
1). 3 cm
2). 7 cm
3). 9 cm
4). 5 cm
(251 + 252+253+254+255) is divisible by
1). 23
2). 58
3). 124
4). 127