If the sum of a number and its reciprocal be 2, then the number is
The area of a rectangle in 60 cm2 and its perimeter is 34 cm, then the length of the diagonal is
A cloth merchant has announced 25% rebate in prices. If one needs to have a rebate of ₹ 40, then how many metres of cloth costing ₹ 32 per metre he should purchase.
A profit of Rs. 960 is divided between A and B in the ratio 1/3:1/2. The difference of their profit is :
The average monthly salary of 19 members of a group is Rs. 16000. If one more members whose monthly salary is Rs. 20000 has joined the group, then the average salary of the group is
A T.V was sold at a profit of 5% If it had been sold at a profit of 10% , the profit would have been Rs. 1000 more. What is its cost price
The price of an article is decreased by 10%. To restore it to its former value, the new price must be increased by :
A moving train passes a platform 50m long in 14 seconds and a lamp post in 10 seconds. The speed of the train (in km/h) is :
If x2 + 1/x2 = 2, then the value of x - 1/x is
If pq (p+q) = 1, Then the value of 1/p3q3 -p3-q3 is equal to
A chord of length 16 cm is drawn in a circle of radius 10 cm. The distance of the chord from the centre of the circle is
An angle in a semicircle is
If x = a cosθ+ b sinθ and y = b cosθ- a sinθ, then x2 + y2 is equal to
A can do a work in 12 days while B can do it in 15 days. They undertake to complete it together for Rs. 450. what will be the share of A in this amount of money
If x = √2+1, then the value of x4-1/x4 is
If 9x2 + 16y2 = 60 and 3x + 4y = 6, then the value of xy is
Options:
If in ΔABC, DE ||BC, AB = 7.5cm, BD = 6cm and DE = 2cm, then the length of BC in cm is :
Suppose that the medians BD, CE and AF of a triangle ABC meet at G. Then AG: GF is
If cosθ/1-sinθ + cosθ/1+sinθ = 4 then
the value of θ(0<θ<900) is
A sum of Rs. 2000 amounts to Rs. 4000 in two years at compound interest. In how many years does the same amount becomes Rs. 8000.
Two ships are sailing in the sea on the two sides of a light house. The angle of elevation of the top of the light house as observed from the two ships are 30° and 45° respectively. If the light house is 100m high, the distance between the two ships is :(take √3=1.73)
The percent increase in the number of students admitted in the year 2003 over that in 2001 is
During 2000 to 2003, the ratio of the total number fo the students passed out to the total number of students admitted is
In which of the two years, the pass percentage of students was between 60 to 70
The ratio of the number of students admitted in the year 2002 to the average of the number of students passed out in the years 2003 and 2004. is