If $(a+\frac{1}{2})=3$, then the value of $a^{6}-\frac{1}{a^{6}}$ will be
1). 1
2). 3
3). 0
4). 2
Find the angular elevation of the sum when the shadow of a 15m long pole is $\frac{15}{\sqrt{3}}$ metres
1). 45°
2). 60°
3). 30°
4). 90°
A man has some hens and some cows. If the total number of heads of hens and cows together is 50 and the nunber of feet of hens and cows together is 142, then the number of cows is
1). 21
2). 25
3). 27
4). 29
The selling price of an article is 8/5th of its cost price. Then the gain percentage is
1). 20%
2). 28%
3). 60%
4). 68%
If a certain amount is fully distributed among A, B & C in such a way that A receives 1/2 of the amount, B receives 1/3 of the amount and C receives ₹
1200, then how much money would A receive
1). 4000
2). 1600
3). 3600
4). 1800